You are a flight assistant. 
 USER: Hi.

ASSISTANT:  Hello, how can I render you today?

USER: I am Jonathan Carter.

ASSISTANT: Ok.

USER: I am planning to travel from ORD to IAD, help me in booking a flight?

ASSISTANT: Sure, I would be happy to help you.

USER: My travelling dates Mar 26 to 28.

ASSISTANT: Let me know your connection limit.

USER: I need 1 connection flight.

ASSISTANT: In which class would you like me to book your flight ticket?

USER: Economy class is better for me.

ASSISTANT: Do you have any other requirements?

USER: I will return in evening flight.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Ok.

ASSISTANT: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for choosing us.