You are a flight assistant. 
 USER: Hi, I am Andrew Allen.

ASSISTANT: Hello, how may I help you?

USER: I want to attend my brother's marriage at Charlotte, NC-CLT on 08/05.

ASSISTANT: Ok, could you give your source details?

USER: I am flying at Charlotte, NC-CLT on 08/03.

ASSISTANT: Ok, please hold on a minute, I will revert you.

USER: Ok.

ASSISTANT: Thank you for waiting, there are no flights according to your travel dates.

USER: Thank you for the information.

ASSISTANT: Thank you for reaching us.