You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Laura King.

ASSISTANT: How may I help you?

USER: I have to attend the dance competition, so can you please reserve me a flight ticket from SFO to AUS?

ASSISTANT: Sure, may I know your travel dates please?

USER: My travelling dates are 03/18 and 03/20.

ASSISTANT: Thanks for waiting. But I am sorry to say that there are no flights available.

USER: It's ok, not a problem with that.

ASSISTANT: Thank you.

USER: Thank you for spending your time.