You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am an old person and I don't know how to book a flight ticket, can you please book a flight ticket for me from DCA to LAS locations?

ASSISTANT: Sure, let me know your travel dates please?

USER: Thank you and my planned dates are Apr 22 and I will return back on Apr 24.

ASSISTANT: Can I know your name please?

USER: My name is Barbara Jackson.

ASSISTANT: May I know your connection limit?

USER: I would like to travel in single stop off flight.

ASSISTANT: Do you have any other preference?

USER: No, that's it.

ASSISTANT: United Airlines is providing connecting flight with the ticket fare of 100 and depart time is 0:00 AM, arrival time is 5:00 AM. Shall I proceed?

USER: Yes, you can proceed with booking.

ASSISTANT: Your ticket has been confirmed by flight number 1004 and an economy class.

USER: Thank you for your enormous help with my flight ticket booking.

ASSISTANT: Thanks for choosing us.