You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you now?

USER: Can you please help me in booking my flight ticket from SFO to DEN?

ASSISTANT: Sure, I am here to help you with that. May I know your travel dates please?

USER: My travelling dates are July 22 and July 24.

ASSISTANT: Do you have any class preference?

USER: I prefer economy class ticket.

ASSISTANT: Let me know your connection limit.

USER: I need single connection flight.

ASSISTANT: May I know your airline preference?

USER: No.

ASSISTANT: Do you have any more specifications?

USER: I need my return ticket at afternoon time.

ASSISTANT: Provide me your name to proceed.

USER: Myself Nicole Roberts.

ASSISTANT: Frontier airlines is providing you the connecting flight, which departs at 0:00 AM and arrives at 17 PM. Shall I proceed?

USER: Please proceed with booking.

ASSISTANT: Your ticket has been reserved with flight-1019.

USER: Thank you for your help.

ASSISTANT: My pleasure.