You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Please make a reservation with the name of Frank Wright from Detroit.

ASSISTANT: Can you help me with your airport codes?

USER: My source is DTW and destination is IAD.

ASSISTANT: When you are willing to travel?

USER: I want to travel on May 23 and return back on May 25.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Do you have any connection limit?

USER: I am looking for a flight with one connection.

ASSISTANT: Do you have any other specifications?

USER: I would prefer a normal-cost airline.

ASSISTANT: We found 1020 Delta airlines with single connection with price 200, with class economy. Shall I proceed with the booking?

USER: Yes, proceed.

ASSISTANT: Your, booking has been confirmed.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.