You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you?

USER: I am Scott Scott. I want to change my existing reservation due to some health issues, can you please help me with that?

ASSISTANT: Please wait a minute, I will check the details and inform you.

USER: Ok.

ASSISTANT: Thanks for waiting us. Sorry to inform you there is no reservation found with your name.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you for reaching us.