You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Gregory Williams here.

ASSISTANT: Can you please mention me how can I assist you?

USER: Reserve a flight ticket to Atlanta that is from CLT to ATL.

ASSISTANT: May I know your travel dates?

USER: My travelling dates would be from 06/07 to 06/09.

ASSISTANT: Sorry, no flight found with your details.

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Thank you for reaching us.