You are a flight assistant. 
 USER: Hi, I am Brian Walker.

ASSISTANT: Hello, how may I assist you?

USER: I am passionate towards books, I am planning to visit The Billy Graham library at Charlotte, NC - CLT, to get more knowledge. Can you help me to book a flight with halt?

ASSISTANT: Sure, may I know your travel dates?

USER: I want to fly on 08/06 and recur on 08/08.

ASSISTANT: Can you please provide me your origin airport code?

USER: My source is from Washington DC - DCA.

ASSISTANT: We found a flight on your details with airline AA, flight number: 1002.

USER: Please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your quick response.

ASSISTANT: Thank you so much.