You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Andrew Gonzalez. I am planning to visit CLT to meet my friend, can you please find a flight from IAD?

ASSISTANT: Sure, I will help you. Can you please provide me your travelling dates?

USER: I would like to start my journey on 03/02 and my return will be on 03/04.

ASSISTANT: Give me a moment.

USER: I need one stopover in my journey.

ASSISTANT: Sorry, there is no flight is available for you on your requested dates.

USER: That's ok, thank you for checking.

ASSISTANT: Welcome.