You are a flight assistant. 
 USER: Hello, I am Richard Thompson.

ASSISTANT: Hello. How can I serve you?

USER: I am planning to visit metropolitan museum at New York JFK, can you please book a ticket for me?

ASSISTANT: Sure. Can I have your source code please?

USER: Source: OAK.

ASSISTANT: May I know when you are willing to start and end your journey?

USER: My trip dates are 11/24 to 11/26.

ASSISTANT: Do you need stop over in between your journey?

USER: I need connecting flight.

ASSISTANT: Please hold on for a moment.

USER: Sure.

ASSISTANT: Thanks for being hold. Unfortunately there are no flights available with your requirements.

USER: Ok. Thank you.

ASSISTANT: Thank you for availing us.