You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Ruth Evans.

ASSISTANT: Ok.

USER: I want to cancel my recent reservation due to my health issue. Can you help me out?

ASSISTANT: Sure, I will check the reservation list and revert to you. Please wait.

USER: Sure.

ASSISTANT: Your reservation was not existed earlier.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you.