You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Steven Anderson.

ASSISTANT: How can I render you today?

USER: I am planning to cancel my recent reservation, due to health issue. Can you please cancel my reservation?

ASSISTANT: Ok, please wait.

USER: Sure, I will wait.

ASSISTANT: Sorry, no reservation found on your name in my database to cancel.

USER: That's fine. Thank you for your service.

ASSISTANT: Thank you for opting our service.