You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I want to fly from HOU to JFK. Can you check the flight availability on that route?

ASSISTANT: Sure, can you share your trip dates?

USER: My planned travel dates are 10/18 and 10/20.

ASSISTANT: Do you have any preferences?

USER: I am comfortable with only a direct flight.

ASSISTANT: May I know your name?

USER: Sure Jonathan Jones here.

ASSISTANT: Sorry, there is no flight on your given dates.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for reaching us.