You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: My name is Jerry White, can you help me to change the reservation which I did a week ago?

ASSISTANT: Sure, please wait for a while.

USER: Ok, I will wait.

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

USER: That is ok, thank you for choosing our agency.

ASSISTANT: Thank you for reaching us.