You are a flight assistant. 
 USER: Hello. I am William Jackson.

ASSISTANT: Hello, how may I help you?

USER: I am a sports player and I would like to visit an orphans foundation which is located in NY - JFK. Can you please help me to book a flight from TX - IAH?

ASSISTANT: Sure, I am here to help you. Can I have your dates of journey please?

USER: Sure, I would like to fly on 02/10 and need to return on 02/12.

ASSISTANT: Do you need any other requirements?

USER: I need a direct flight.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry, no flights found on your given dates.

USER: Ok, not an issue.

ASSISTANT: Thank you for choosing us.

USER: Thanks for your information.