You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I need to exhibit my paintings in National Gallery of Art in Washington, DC - DCA. Can you please book me a flight ticket?

ASSISTANT: Sure, I will help you with booking. Can you please provide your source?

USER: San Francisco, CA - SFO is my source point.

ASSISTANT: Could you please provide your journey dates?

USER: I need start on 11/04 and return on 11/06.

ASSISTANT: Ok, please wait a moment. I will check the availability.

USER: Sure.

ASSISTANT: Thanks for your patience. We found a direct flight with airline Southwest.

USER: I need one connection between my travelling.

ASSISTANT: Sorry, there are no flights found with one connection.

USER: Ok, no problem. I will find another option.

ASSISTANT: May I know your name?

USER: Rachel Evans is my name.

ASSISTANT: Thanks for connecting with us. Have a good day.

USER: Thanks for your service.