You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Steven Hill. Can you please assist me in finding a flight from SFO airport to IAH airport?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: Can I know your travelling dates?

USER: My travelling dates are 05/27 and 05/29. I am able to spent the amount up to 200. So please check the flight with this requirement.

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: Oh! It is so sad to here from us. Anyways thank you for searching the flight.

ASSISTANT: Thank you.

USER: You are welcome.