You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Barbara Carter.

ASSISTANT: What can I do for you Barbara?

USER: I want to visit my friend in Detroit, could you help me in booking the ticket?

ASSISTANT: Ok, tell me your travel dates?

USER: The dates of travel are from 05/02 to 05/04.

ASSISTANT: May I know your airport codes?

USER: It's from DCA to DTW.

ASSISTANT: Wait for a minute. Flight-1028 is available with Spirit airlines, shall I book it?

USER: Please book the ticket.

ASSISTANT: Your booking ids done.

USER: Thank you for helping me out.

ASSISTANT: Have a great day, thank you.