You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: My name is Joseph Brown, I want to book a flight on 19th Jan to attend a meeting at Las Vegas. Can you book a connecting flight for me?

ASSISTANT: Sure, please provide your airport codes.

USER: I will fly from MCO to LAS.

ASSISTANT: May I know your return journey date?

USER: I will return on Jan 21.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry Joseph Brown, no flight is available on your route.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for choosing us.