You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Jack Martinez. I want to book a flight ticket from LAS to DEN. Can you help me?

ASSISTANT: Sure, may I know your trip dates please?

USER: Thank you. 08/20 and 08/22 are my travelling dates.

ASSISTANT: Ok, do you have any other requirements?

USER: I need to return in the afternoon.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting and we have found a flight in economy class with 1 connection in Frontier airlines and the fare of your flight will be 200. Do you like me to proceed your booking with this flight?

USER: You can reserve it.

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

USER: Thank you for your quick help.

ASSISTANT: My pleasure.