You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Benjamin Turner. I would like to book a flight ticket from Denver CO-DEN to Washington DC-IAD.Could you please help me?

ASSISTANT: Sure, could you please share your departure and arrival dates?

USER: My departure and arrival dates are 04/21 and 04/23.

ASSISTANT: Are you okay with connecting flight or you need a direct flight?

USER: I need a connecting flight.

ASSISTANT: How much can you afford for this booking?

USER: I can afford upto 500.

ASSISTANT: We found a Delta airline with flight number 1009 available for you matching your credentials. The total estimate of ticket price is 100. Shall I proceed?

USER: You can proceed.

ASSISTANT: Your booking has been confirmed. You can collect your ticket at the time of check - IN.

USER: Thank you.

ASSISTANT: Thank you for choosing us.