You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Gary Thompson here.

ASSISTANT: How can I assist you at this moment?

USER: Can you please help me in booking a ticket from LAX to CLT?

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

USER: Sure, my journey dates are 12/30 and 01/01.

ASSISTANT: Wait a moment please.

USER: Sure.

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

USER: That's ok, I'll find some other way to go there. Thank you for your service.

ASSISTANT: Thank you for contacting us.