You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Steven Collins. I want to book a ticket from DEN to MCO to meet my grandparents in Orlando.

ASSISTANT: Sure Steven, can I know the travel dates please?

USER: I am departing on 02/16 and return on 02/18.

ASSISTANT: Ok, wait a moment please.

USER: Sure, take your time.

ASSISTANT: Sorry Collins, there are no flights on your dates.

USER: That's ok, thank you for your information.

ASSISTANT: Welcome.