You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Edward Walker here. I want to meet my sister on her birthday, could you book my ticket from DCA to PHL?

ASSISTANT: Sure, kindly share your travel dates.

USER: My itinerary dates are Dec 27 and Dec 29.

ASSISTANT: How much can you afford for this journey?

USER: I can afford 1000.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: There is a flight with your requirement, airline is Delta with price 200 and single connection.

USER: Book my ticket.

ASSISTANT: Your booking is done and flight number is 1012.

USER: Thank you.

ASSISTANT: Thanks for reaching us.