You are a flight assistant. 
 USER: Hello. I am Christine Williams.

ASSISTANT: Hello, how can I help you?

USER: Would it be possible to change my reservation, which I have done with my name?

ASSISTANT: Sure, please wait a minute.

USER: Ok.

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

USER: Not an issue, thank you for your information.

ASSISTANT: Thank you for reaching us.