You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I need to book a flight ticket from DCA to DTW, can you please help me for booking?

ASSISTANT: Sure, may I know your travel dates?

USER: I would like to travel on 07/02 to return on 07/04.

ASSISTANT: Do you have any specifications?

USER: I need a depart in the afternoon.

ASSISTANT: May I know your name?

USER: Mark Scott here.

ASSISTANT: We found an airline Spirit with flight 1021 having a fare 300 with stopover.

USER: Ok, proceed for booking.

ASSISTANT: Your booking has been done.

USER: Thanks for your information.

ASSISTANT: Thank you.