You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Richard Rodriguez. Can you please book a flight ticket from DEN to LAS?

ASSISTANT: Sure, may I know your trip dates?

USER: Sure, I have planned my travel dates as Sept 08 ad Sept 10.

ASSISTANT: Ok, do you have any other requirements?

USER: I would like to return in the afternoon time.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting and we have found a flight in economy class with 1 connection in United airlines and the fare of your flight will be 100. Do you like me to proceed your booking with this flight?

USER: That is fine, please proceed with booking.

ASSISTANT: Ok, your ticket is booked with the flight number 1004.

USER: Thank you for your help.

ASSISTANT: My pleasure.