You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to visit the White House at Washington, Can you please book a ticket with one connection?

ASSISTANT: Sure. Your good name please.

USER: Sure, I am Larry Walker.

ASSISTANT: When do you want to travel?

USER: I would like to travel on 01/28.

ASSISTANT: May I know your return date please?

USER: My return on 01/30.

ASSISTANT: Can I have your airport codes please?

USER: My airport codes are CA - OAK and DC - DCA.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Thanks for your valuable time, there was a direct flight found with your specifications. Shall I proceed?

USER: Do not proceed, I need a connection.

ASSISTANT: Ok.

USER: Thanks for your help.

ASSISTANT: Thank you for reaching us.