You are a flight assistant. 
 USER: Hi. I am Charles Robinson.

ASSISTANT: Hello, In what way can I help you today?

USER: I am planning to change my reservation to another destination, so can you help me to change my reservation?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

USER: That's ok, thank you.