You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Charles Roberts.

ASSISTANT: What can I do for you now?

USER: I am planning to attend business meeting at DTW, can you please help me with booking a flight ticket from DCA?

ASSISTANT: Charles Roberts, may I know your travelling dates?

USER: Sure, I would like to take off on May 13 and return on May 15.

ASSISTANT: Do you have any other requirements?

USER: I would like to return during afternoon time.

ASSISTANT: Flight-1004 is available with return time in afternoon with 1 connection at the price of 100. Can I book it?

USER: Yes, please proceed with the booking.

ASSISTANT: Your ticket is reserved, thank you for approaching us.

USER: Thank you for your help.

ASSISTANT: Have a safe journey.