You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me to book a flight ticket form DCA to PHL?

ASSISTANT: Sure. May I know your planned journey dates?

USER: My travelling dates are Sept 21 to Sept 23.

ASSISTANT: Let me know your connection limit.

USER: I need a single connection of flight.

ASSISTANT: Do you have any other requirements?

USER: I prefer to fly in big brand airlines.

ASSISTANT: May I know your name?

USER: My name is James Jackson.

ASSISTANT: Thank you for sharing the details.

USER: Ok.

ASSISTANT: There is a flight available with fare 100 and single connection in American Airline. Shall I reserve it?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been confirmed in economy class with flight number 1001.

USER: Thank you.

ASSISTANT: Thank you for choosing us.