You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: Can you help me in booking a flight ticket from IAH to JFK?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: I want to travel on 02/29, and return on 02/02.

ASSISTANT: Do you have any preferences?

USER: I need a direct flight.

ASSISTANT: May I know your name please?

USER: I am Frank Gonzalez.

ASSISTANT: Sorry, there is no flight available with your requirements.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: You are welcome, have a nice day.