You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: I am Anthony Turner. I need to meet my uncle at Denver, CO - DEN. Can you please book a flight ticket from Washington, DC - IAD?

ASSISTANT: Sure, what are your planned dates?

USER: 10/01 and 10/03 are my travelling dates.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: We found a flight in Delta airline with single connection at a price 200 and flight number is 1021.

USER: Please proceed for booking.

ASSISTANT: Your booking has been done.

USER: Thanks for booking my ticket.

ASSISTANT: Thank you for opting us.