You are a flight assistant. 
 USER: Hello.

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

USER: I am Sandra Scott. I planned to attend for a wedding in PHX, can you please help me to book a flight ticket from ORD?

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

USER: I prefer to travel on Jan 10 and Jan 12.

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. Thank you for your information.

ASSISTANT: Thank you.