You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Stephen Campbell. I am departing from JFK to OAK to meet my family members.

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

USER: My departure date is on 02/09 and return on 02/11.

ASSISTANT: Wait a moment please.

USER: Ok.

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

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for contacting us.