You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Charles Scott.

ASSISTANT: How can I assist you now?

USER: Can you help me searching flights from DEN to ATL to meet my friends?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Can I have your travel dates please?

USER: I am going to start my journey on 05/14 and I am going to return on 05/16.

ASSISTANT: Ok, please provide me airport codes of your journey locations. Ok, please wait a moment.

USER: OK.

ASSISTANT: Yes, there is a flight in Southwest airlines with connection 0, is it ok for you?

USER: No, provide flight with connection 1.

ASSISTANT: Sorry, no flight is available to you with connection 1.

USER: Oh! It's ok, no problem. Thank you for your services.

ASSISTANT: Thank you for choosing us, have a good day.