You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you at this moment?

USER:  I want to book a flight on the route from BOS to SFO to meet my cousin, can you help me?

ASSISTANT: Sure, can you please provide your travelling dates?

USER: Sure, my travel dates are from 02/16 to 02/18.

ASSISTANT: May I know your good name for documentation purpose?

USER: My name is Ashley Allen.

ASSISTANT: Ashley Allen, there are no flights available on this route due to heavy bookings.

USER: It's ok, no problem.

ASSISTANT: Thank you for contacting us.

USER: Thank you for checking.