You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: My name is Sharon Thomas, I would like to cancel my recent reservation. due to bad health condition.

ASSISTANT: Sure, I will help you in cancelling of your reservation. Please be on hold to check your previous reservation.

USER: Sure, take your time.

ASSISTANT: We regret to inform you, there is no reservation existing on your name in our records.

USER: No problem, thank you for the help.

ASSISTANT: Thank you for approaching us, hope you have a great day.