You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to book a flight ticket from JFK to ORD. Can you help me?

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

USER: Sure, my travelling dates are 02/21 and 02/23.

ASSISTANT: There are no flights available on those dates. May I know your good name please?

USER: Ok, no problem. Yes, I am Ryan Walker.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your information.