You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: I am Patrick Moore. Assist me in finding a best flight to Detroit MI-DTW to attend a party.

ASSISTANT: Sure. Please let me know your origin airport code.

USER: I want to board from my nearest airport DC-IAD.

ASSISTANT: May I know on what dates would you like to travel?

USER: I prefer to start on 11/23, my return date is on 11/25.

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: Its ok, I will find out other alternative. Thank you for your effort.

ASSISTANT: Ok. Thank you.