You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Ronald Edwards. I want to change my existing reservation. Could you help me?

ASSISTANT: Sure, please wait for a while.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting, there is no reservation on your given name.

USER: That's ok. Thank you for helping me.

ASSISTANT: Thank you for reaching us.