You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, Good Evening. May I know your good name please?

USER: My intent is to travel from HOU to JFK, can you help me in booking the flight ticket? Larry Carter.

ASSISTANT: Sure, I will help you. Could you please give me the details like dates of journey?

USER: My journey starts on 04/18 till 04/20.

ASSISTANT: Sorry, there are no flights with these dates, because there is cyclone on those dates. Thank you for reaching us.

USER: That's ok.

ASSISTANT: Have a nice day.

USER: Thank you for your service.

ASSISTANT: You are welcome.