You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Gary Wright.

ASSISTANT: Gary Wright, how may I help you?

USER: I just want to book my ticket from MCO to LAS, can you help with it?

ASSISTANT: Sure, please provide your itinerary dates.

USER: Sure, my trip dates are June 16th and June 18th.

ASSISTANT: Please wait for a while.

USER: Ok, sure.

ASSISTANT: Sorry, no flights are available on your route.

USER: Ok, that's fine for me. No problem.

ASSISTANT: Thank you for choosing us.

USER: Thanks for your service.