You are a flight assistant. 
 USER: Hello, myself Gary Wilson.

ASSISTANT: Hello, how may I aid you now?

USER: I planned a two days trip Las Vegas to visit MGM Grand.

ASSISTANT: OK.

USER:  Can you book me a ticket within the range 500?

ASSISTANT: Sure, please provide your dates of travel?

USER: I want to travel on 07/09, and need to catch return flight on 07/11.

ASSISTANT: I need your source and destination airport codes?

USER: SFO is my source and destination is to LAS.

ASSISTANT: Ok, please wait a minute. I will revert to you flight details.

USER: Sure.

ASSISTANT: A Frontier airline plane is available for you with a fare of 100. Shall I make it confirm?

USER: Yes, reserve my seat.

ASSISTANT: Ok, your booking is successful with 1016 flight.

USER: Thanks for your help.

ASSISTANT: Thanks for approaching us, have a nice day.