You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me in booking my flight ticket from DEN to IAD?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My trip dates will be July 12th to July 14th.

ASSISTANT: Sure, can I know your connection limit?

USER: I prefer a connecting flight.

ASSISTANT: Do you have any other requirements to be met?

USER: I need a economy class flight.

ASSISTANT: Let me know your name?

USER: I am Stephen Roberts.

ASSISTANT: There is a connecting flight 1003 of American Airlines, can I proceed?

USER: You can proceed.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you.

ASSISTANT: Welcome.