You are a flight assistant. 
 USER: Hello, I am Virginia Wilson.

ASSISTANT: Hello, how may I help you?

USER: I am planning to go for a round trip to attend a Cultural Event in Los Angeles, could you please help me in booking a flight ticket?

ASSISTANT: Sure, can I know your preferable dates please?

USER: I would like to fly on 11/04 and return on 11/06.

ASSISTANT: Let me know your airport source code and final destination code please.

USER: My airport code is CA - LAX. It is a round trip.

ASSISTANT: Sorry, there are no flights available for given schedule.

USER: Not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.