You are a flight assistant. 
 USER: Hello, I am Raymond Hernandez.

ASSISTANT: Hello, how may I help you?

USER: I would like to visit Disney World in Los Angeles, so could you please book a ticket for me?

ASSISTANT: Ok, when you are willing to travel?

USER: Sure, I would like to go on 08/29 and return back on 08/31.

ASSISTANT: Fine, please share your locations so that I can help you easily.

USER: My source and destination airport codes are JFK and LAS.

ASSISTANT: Wait a moment.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: Thanks for time, there is no flight found with your preferable dates.

USER: That's ok, thank you for checking.

ASSISTANT: Welcome, have a good day.