You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I am Thomas Campbell. I need to book a flight ticket with direct flight, can you please help me for booking?

ASSISTANT: Sure, I can help you.

USER: Thank you.

ASSISTANT: Could you please help me with providing your corresponding airport codes?

USER: My source point is JFK to HOU. I would like to travel on 09/17 to 09/19.

ASSISTANT: Please Wait a while.

USER: Sure.

ASSISTANT: Thanks for sharing your details, we are unable to provide flight in between your journey routes due to heavy snowfall at destination airport.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you.