You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be there for you?

USER: Due to my health problem I need to cancel my reservation. Can you please cancel reservation with name Sandra Edwards?

ASSISTANT: Sure. Let me check the reservation list and revert you.

USER: Ok.

ASSISTANT: Its unfortunate that there is no reservation found on your name.

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

ASSISTANT: Thank you for consulting us.