You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I need you to book a flight ticket from OAK to DEN, please help me.

ASSISTANT: Sure, can you please share your journey dates?

USER: December 19 and 21 are my planned travelling dates.

ASSISTANT: Do you have any connection limit?

USER: I need a break in between my journey.

ASSISTANT: May I know your name please?

USER: Deborah Roberts here.

ASSISTANT: Are there any more specifications?

USER: Nothing much to state.

ASSISTANT: We found a Spirit airlines, flight number 1013, and the fare of 200 with single connection. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket has been reserved in economy class.

USER: Thank you very much.

ASSISTANT: Thank you for choosing us.