You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I have plan to meet my friend in Denver, Can you please help me for booking?

ASSISTANT: Sure. Please tell me your travel details?

USER: My airport codes are from DCA to DEN and travelling dates are 07/24 and 07/26.

ASSISTANT: May I know your good names?

USER: James Thompson here, Please make sure that, connection limit should be 1.

ASSISTANT: Please wait.

USER: Ok, take your time.

ASSISTANT: I found a flight with 0 connection. Shall I proceed?

USER: No, I want with 1 connection.

ASSISTANT: Sorry, no flight is available as per your requirements.

USER: It's ok, thank you for your information.

ASSISTANT: Thank you for contacting us.

USER: Welcome.