You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you?

USER: I am Steven Turner. For my college vacation, I want to visit JFK. Can you book my tickets from HOU?

ASSISTANT: Please provide your travel dates?

USER: These are my travelling dates 10/24 to 10/26.

ASSISTANT: There is no flight available, Steven.

USER: That's fine.

ASSISTANT: Thanks for choosing us.

USER: Thank you for spending your time in talking to me.