You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I'm Timothy Lopez. I am planning to attend business meeting at New York, can you please help me with booking a flight ticket?

ASSISTANT: Sure, can I know your preferable dates?

USER: Sure, I would like to take off on 03/07 and return back on 03/09.

ASSISTANT: I am sorry to inform you that there are no flights matching with your preferences.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you, have a good day.