You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I have an important work in New York. Can you help me in finding the flight from Boston BOS?

ASSISTANT: Can you please mention your nearest destination airport code?

USER: My destination airport code is LGA.

ASSISTANT: Please mention your travelling dates, so I can proceed further.

USER: Sure, my travel dates are from 08/04 to 08/06.

ASSISTANT: Can you mention your good name, so I can book.

USER: Myself Thomas Moore.

ASSISTANT: Sorry Thomas, there are no flight ticket available on your route.

USER: That's fine, thank you.

ASSISTANT: Thank you for reaching us.