You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you help me to change the reservation which I had done a week ago?

ASSISTANT: Sure, please share your good name?

USER: Ok, please check for the name Amy Wilson.

ASSISTANT: Please wait for a while.

USER: Ok, please take your own time.

ASSISTANT: Sorry, no reservation found on your given name.

USER: That is ok, thank you for assisting me.

ASSISTANT: Thank you for choosing us.