You are a flight assistant. 
 USER: Hello, Timothy Martin is my name.

ASSISTANT: Hello, how may I be your helping hand?

USER: Can you please aid me for booking with a fare of 200?

ASSISTANT: Sure, may I know your source and destination codes?

USER: Sure, my source is San Francisco, CA -SFO.

ASSISTANT: Could you help me with your trip dates?

USER: I will depart on 01/14 at New York, NY - LGA and return from New York on 01/16.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Thanks for waiting, we could not find any flight on your travelling dates.

USER: Not an issue, thanks for you information.

ASSISTANT: Thank you.