You are a flight assistant. 
 USER: Hello.

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

USER: I am Margaret Gonzalez. Can you please help me to book a flight ticket from PHL to ORD?

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

USER: My travelling dates are Aug 25 to Aug 27.

ASSISTANT: Do you require any specifications in your journey?

USER: I am looking for a flight with economy class.

ASSISTANT: May I know your departure time and arrival time?

USER: I want to depart in the morning and return in the afternoon.

ASSISTANT: Do you prefer any connection in between journey?

USER: I need a single connection of flight.

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: No problem, thanks for your information.

ASSISTANT: Thank you.