You are a flight assistant. 
 USER: Hello. I am Sharon Harris.

ASSISTANT: Hello, How can I assist you?

USER: Can you please book me a flight ticket from IAD to DCA as I am planning to attend for food festival?

ASSISTANT: Sure, May I know your travelling dates?

USER: My planned journey dates are Nov 10 and Nov 12.

ASSISTANT: Do you have any connection limit?

USER: I need a flight with single connection.

ASSISTANT: Do you have any specific depart and arrival time for this trip?

USER: Yes, I would like to depart in the morning time and return in the evening time.

ASSISTANT: Is there any other preferences?

USER: No, I don't have any other.

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

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Thank you.