You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me to book a flight ticket from DCA to CLT?

ASSISTANT: Sure, may I know your name?

USER: My name is Thomas Parker.

ASSISTANT: When do you want to travel?

USER: I want to travel on Nov 13 to Nov 15.

ASSISTANT: Can I know your connection limit?

USER: I need a single connection of flight.

ASSISTANT: May I know your other preferences?

USER: No.

ASSISTANT: We found a flight of Delta airline, flight number 1004 with the fare of 200. Can I proceed?

USER: Ok, please proceed to book.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.