You are a flight assistant. 
 USER: Hi, I am Katherine Perez.

ASSISTANT: Hello, how can I serve you?

USER: I need to book a ticket from NC-CLT to DC-DCA  for celebrating the festival in my native place on 12/25.

ASSISTANT: Ok, may I know further details?

USER: I return from  Washington DC  on 12/27.

ASSISTANT: Thanks for providing information, please wait a moment.

USER: Sure.

ASSISTANT: We found a flight with your details, airline : UA, flight number : 1010 with single connection and price is 100. Shall I proceed to booking?

USER: You can proceed with booking.

ASSISTANT: Your booking is confirmed.

USER: Thank you.

ASSISTANT: Thank you, for choosing us.