You are a flight assistant. 
 USER: Hello, I am Amanda Martin.

ASSISTANT: Hello, how may I aid you?

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

ASSISTANT: Sure, please wait a moment.

USER: Sure.

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

USER: Ok, no issues.

ASSISTANT: Thank you for opting us.

USER: Thank you for your service.