You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Myself Paul Hills, I want to change my reservation. Can you help me?

ASSISTANT: Sure, please wait for a moment.

USER: Ok, I will wait for the responce.

ASSISTANT: Sorry, there is no reservation found by your name.

USER: That's ok, no problem. May be it is change by my mother. Thank you for helping me.

ASSISTANT: Thank you and have a nice day.