You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Michael Adams.

ASSISTANT: Ok.

USER: I want to celebrate my birthday at Oakland, can you please help me to book a flight ticket from DCA to OAK?

ASSISTANT: Sure, Could I have your journey dates, please?

USER: Sure, my journey dates are Nov 29 and Dec 01.

ASSISTANT: Do you prefer a stopover in between your journey?

USER: I need a single connection flight.

ASSISTANT: May I know your class preference?

USER: My class preference is economy.

ASSISTANT: Is there any more specifications?

USER: My return time is morning.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your own time.

ASSISTANT: We found a connecting flight 1003 from JetBlue airline has fare 100, the return time is 9:00 AM. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.