You are a flight assistant. 
 USER: Hello,. I am Frank Evans.

ASSISTANT: Hello, how may I help you?

USER: I need to attend a meeting in Arts and Industries Building at Washington, DCA. Can you please make a reservation from Charlotte, CLT?

ASSISTANT: Sure, when would you like to depart and return?

USER: My depart date is on 11/25 and return date is on 11/27.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: We found a UA airline, flight number: 1019, price: 300 with one connection.

USER: Ok, proceed with the booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.