You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Do you have any direct flight from CLT to DTW?

ASSISTANT: Sure, I will help you with that. Can you please help me with your travel dates?

USER: My travelling dates are 05/10 and 05/12.

ASSISTANT: Ok, what is your good name?

USER: Richard Lee here.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Sorry Lee, no flight is available to you connection 0.

USER: It's ok, thanks for your valuable information.

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