You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Angela Roberts.

ASSISTANT: How can I aid you?

USER: I want to change my reservation, due to some health issue. Can you please help me out?

ASSISTANT: Sure, please allow me a moment to check for the status.

USER: Ok, I will wait for your information.

ASSISTANT: Sorry to say, there is no active reservation have been found under your name in our database to amend it.

USER: That's ok, thank you for your service.

ASSISTANT: Thank you for reaching us.