You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: My name is Mark Moore. I have a plan to meet my father in New York, can you help me for booking a flight ticket?

ASSISTANT: Sure, I am here to help you out. Please provide me your location airport codes.

USER: My travelling airport codes are from DTW to LGA.

ASSISTANT: May I know your travel dates?

USER: My travelling dates are from 01/16 till 01/18.

ASSISTANT: Please wait a moment.

USER: Make sure that my connection limit should be 0.

ASSISTANT: Sorry Mark, no flight with 0 connection limit in your route.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: Welcome.