You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I am George Evans. Please help me in booking my flight ticket from IAH to DTW?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: My travelling dates are 01/28 and 01/30.

ASSISTANT: Thank you for providing your details, please wait for a while.

USER: Ok, 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, fine thank you for checking.

ASSISTANT: Your welcome.