You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Ruth King. Due to my bad health condition, I want to cancel my recent reservation. Can you help me with that?

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there are no active reservation to cancel your ticket.

USER: Ok, not a problem. Thank you for information.

ASSISTANT: Thank you for reaching our service.