You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your good name?

USER: My name is Janet Baker, I want to change my existing reservation due to health issues.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: We found that there is no reservation available with your name.

USER: No problem, thank you for your help.

ASSISTANT: Thank you for reaching us.