You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please reserve a flight ticket from DCA to DTW for my business meeting?

ASSISTANT: May I know your travel dates?

USER: Thank you for accepting my request, my departure is on Dec 25 and please book my return ticket also on Dec 27.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a flight with single connection.

ASSISTANT: Are there any preferences?

USER: No.

ASSISTANT: May I know your name?

USER: Sure, my name is Benjamin Lopez.

ASSISTANT: Flight number 1028 with price 300 with single connection is available. Is it ok for you?

USER: I am ok with this flight, you can proceed with booking now.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching us.

USER: Welcome.