You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Brandon Baker here.

ASSISTANT: Nice meeting you Brandon.

USER: I want to visit CLT for my business project. Can you book my ticket from PHX?

ASSISTANT: Sure, can I know your travelling dates?

USER: My travelling dates are from 09/15 to 09/17.

ASSISTANT: Sorry Brandon, there is no flight available which is travelling to your destination.

USER: It's ok.

ASSISTANT: Thank you for approaching us.

USER: Welcome.