You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Justin Campbell here. I want to attend a meeting in Seattle. Could you please help me with booking a flight ticket from MCO to SEA?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My planned travel dates are 03/27 to 03/29.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Anyway, thank you for the information.