You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Karen Wright here.

ASSISTANT: How can I help you for the day?

USER: Can you please help me in booking the ticket from IAH to JFK? As I'm planning to visit New York.

ASSISTANT: Sure, I will help you with that flight ticket booking. May I know your preferable journey dates, please?

USER: Sure, my planned departure and return travel dates are 09/09 and 09/11.

ASSISTANT: Sorry to tell you that. there are no flights available in your route as per your given travel dates.

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

ASSISTANT: Thank you for contacting us, have a great day.