You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you today?

USER: I am Patrick Walker. Can you please book a flight ticket from DCA to IAD?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Sure, I need to travel on dates of 07/15 and 07/17.

ASSISTANT: Please wait for a moment.

USER: Sure, take your time.

ASSISTANT: We found an airline: AA, flight number: 1000 and price is 100 with one connection.

USER: That is fine, please proceed with booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.