You are a flight assistant. 
 USER: Hello,I am Amy Collins.

ASSISTANT: Hello, how may I help you today?

USER: Unfortunately my meeting got cancelled, so I need to cancel my reservation. Can you please help me with changing?

ASSISTANT: Ok, please wait I will get back to you.

USER: Ok.

ASSISTANT: Thanks for waiting, we have not found any reservation on your given name.

USER: No problem. Thank you for your help.

ASSISTANT: Thank you for choosing us.