You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: David Perez here, I am planning to book a flight ticket to MCO from LAX. Can you please do it for me?

ASSISTANT: Ok, please provide your trip dates too.

USER: Ok, my trip dates are 02/06 and 02/08.

ASSISTANT:   Sorry, there is no flight for you on your route.

USER: It's ok, thank you for the information.

ASSISTANT: Thanks for choosing us.