Have a line on (someone or something) verb phrase
Have helpful information about someone or something that you are trying to find, contact, or reach
Can I have a line on the plumber who worked for you last week?
Thanks to his advice, she has a line on how to keep moving.
Daisy admitted that she couldn't have a line on a guy who could supply raw ingredients at dirt-cheap prices.
When you next come to the city or town where I live, contact me so that we can meet up.
1. If a person "looks up something", he/she tries to find a piece of information about it, typically from a reference book or on a computer.
2. If something "looks up", it is getting better or improving.
3. To contact someone if you are in the area where they live
to be in touch or communicate with somebody, primarily through telephones; to take or grasp somebody physically; to obtain one's reputation.
Used in a situation in which someone talks briefly with another to find out what he or she thinks about something.
The verb "have" should be conjugated according to its tense.