You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you today?

USER: Can you please help me to book a flight from DCA to ORD?

ASSISTANT: Sure, may I know your good name?

USER: I am Katherine Perez.

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

USER: I want to travel on Oct 5 and need to return on Oct 7.

ASSISTANT: Is there any connection limit?

USER: I am looking for a flight with single connection.

ASSISTANT: Do you have any other specifications?

USER: No.

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 checking.

ASSISTANT: Thank you for choosing us.