You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Katherine Young. Can you please find a flight from HOU to JFK?

ASSISTANT: Sure, can you please let me know your trip dates?

USER: My trip dates are 03/31 and 04/02.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Young, there are no flights available on your preferred dates.

USER: Oh! ok, no issues. Thank you for your time.

ASSISTANT: You are welcome and have a nice day.