You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I want to cancel my reservation as my health is not good, can you please help me with that?

ASSISTANT: OK, may I know your name?

USER: Ruth Jackson here.

ASSISTANT: Sorry Ruth, there is no active reservation found under your name in our records.

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

ASSISTANT: Most welcome.