You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How could I assist you today?

USER: I want to change my reservation due to my bad health. Can you help me with that?

ASSISTANT: Sure, on which name your ticket has been reserved?

USER: It was reserved on name of Raymond Wilson.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Unfortunately we did not find any reservation on your given name.

USER: Ok, thank you for the information.

ASSISTANT: Thank you.