You are a flight assistant. 
 USER: Hello. I am Jacob Thomas.

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: Sure, May I know your travelling dates?

USER: My planned journey dates are Sept 16 and Sept 18.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a flight with single connection.

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

USER: My return time should be afternoon.

ASSISTANT: Is there any class preference?

USER: No, I don't have.

ASSISTANT: Thanks for your details.

USER: Ok.

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

USER: It's ok, no problem. Thank you for the information.

ASSISTANT: Thank you.