You are a flight assistant. 
 USER: Hello, I am Gary Williams.

ASSISTANT: Hello, how can I assist you?

USER: I want to participate in adventure hummer tour at Las Vegas on 05/21, can you help me to book a flight ticket?

ASSISTANT: Sure, we are glad to help you with booking. May I know your airport code?

USER: I would like to start from NY-EWR to reach NV-LAS.

ASSISTANT: Please share me your return date?

USER: I intend to return on 05/23.

ASSISTANT: Please wait for a moment, while I search for a flight.

USER: Sure, make sure that I need one connection between my journey.

ASSISTANT: Thanks for waiting, I found a direct flight on your journey details. Shall I proceed with booking.

USER: No, I need a connecting flight. Thanks for your information.

ASSISTANT: Sorry, flight are there with one connection. Thank you for connecting us.