You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Rachel Mitchell.

ASSISTANT: Glad to meet you Rachel.

USER: I would like to travel from OAK to AUS to meet my friend, can you help me for booking a flight ticket?

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

USER: My travelling dates are from 06/24 till 06/26.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Ok, I will wait.

ASSISTANT: Sorry Rachel, there are no flights available on your requested dates.

USER: That's ok, thank you for checking.

ASSISTANT: Welcome, thank you for choosing us.

USER: Welcome.