You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: I am Kevin Clark. I want to book a flight ticket to visit International Spy Museum in Washington.

ASSISTANT: Sure, can you please help me with your journey dates?

USER: My departure is 10/31 and return date on 11/02.

ASSISTANT: May I know your airport codes?

USER: My source from MN - MSP and destination to DC - DCA.

ASSISTANT: Do you have any connection limit?

USER: I need a single connection.

ASSISTANT: Thank you for your details. Sorry, we found an direct flight based on your given details.

USER: Not an issue. Thanks for your service.

ASSISTANT: Thank you for reaching us.