You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

USER: Can you please help me in booking a flight ticket from Oakland, OAK to San Francisco, SFO?

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

USER: My journey dates are from Mar 03 to Mar 05.

ASSISTANT: Do you want to fly in economy class or business class?

USER: I am ok with any class.

ASSISTANT: Any other preferences?

USER: I need a lay by in between journey.

ASSISTANT: Can you mention your name to proceed further?

USER: My name is Christine Edwards.

ASSISTANT: United Airlines has a connecting flight with number 1011 for fare 100, shall I proceed?

USER: Sure, you can proceed for booking.

ASSISTANT: Your ticket is reserved in economy class.

USER: Thanks for your help.

ASSISTANT: Thank you for opting us.