You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: My name is Sharon Thompson. Due to health issues, I can not travel to California. Can you please cancel my reservation?

ASSISTANT: Sure, please wait a moment I will check your reservation details and proceed further.

USER: Ok, take your time.

ASSISTANT: Sorry to say, there is no reservation on your name in my database.

USER: Its ok, no issues. Thank you for the information.

ASSISTANT: Thank you for reaching us, have a nice day.