You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Sharon Clark here. For my art exhibition, I want to go IAD. Can you book my ticket from DCA?

ASSISTANT: Sure, may I know your trip date?

USER: My trip dates are from 04/01 to 04/03.

ASSISTANT: We found a flight for you in UA airline with the flight number 1001. Shall I proceed with the booking?

USER: Yes, please proceed.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you.

ASSISTANT: You are welcome.