You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Please book my ticket from DTW to SEA.

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

USER: My trip dates are Dec 11 and Dec 13.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I prefer single stopover in my journey.

ASSISTANT: May I know your good name please?

USER: Nancy Taylor here.

ASSISTANT: We found American airline with economy class and flight number is 1021 with arrival time is 9:00 hours and depart time is 9:00 hours.Shall I proceed for booking?

USER: Please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you for your assistance.

ASSISTANT: You are welcome.