You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I want to change my reservation as I am unwell, can you please help me?

ASSISTANT: please wait a moment.

USER: Sure.

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

USER: Not an issue, thank you for checking.

ASSISTANT: May I know your name please?

USER: My name is Raymond Thomas.

ASSISTANT: Thank you Raymond for reaching us.

USER: You are welcome.