You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Myself David White. I want to book a flight ticket from HOU to JFK. Can you help me in that?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your travelling dates?

USER: My trip dates are July 14 to July 16.

ASSISTANT: Please wait for a moment.

USER: sure.

ASSISTANT: Sorry, we found no flights on your preferred dates.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.