You are a flight assistant. 
 USER: Hello. I am Christopher Wright.

ASSISTANT: Hello, how can I assist you today?

USER: Can you please reserve me a flight ticket from ORD to DCA to attend a flower festival?

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

USER: Thank you.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My planned journey dates are Apr 07 and Apr 09.

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

USER: I am comfortable with any class.

ASSISTANT: Let me know your connection limit.

USER: I need a flight with single connection.

ASSISTANT: Do you have any other requirements?

USER: My return time should be evening.

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

USER: Sure.

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

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for choosing us.