You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me to book a flight ticket from IAH to DEN?

ASSISTANT: Sure, please share your planned travel dates?

USER: My trip dates are Nov 3 to Nov 5.

ASSISTANT: Can I have your name please?

USER: William Hall.

ASSISTANT: Do you have any connection limit?

USER: I need a single connection of flight.

ASSISTANT: Any other requirements to be met?

USER: I would like to prefer economy class.

ASSISTANT: United Airlines flight 1020 available with connection limit 1 and fare is 100, shall I confirm this economy class flight?

USER: Ok, please proceed.

ASSISTANT: Ok, your ticket has been processed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.