You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Stephen Johnson.

ASSISTANT: How may I help you?

USER: Due to health issues, I would like to cancel my journey. Can you help me in cancelling my reservation?

ASSISTANT: Sure, please wait a minute.

USER: Ok, take your time.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: It's ok, no issues. Thank you for the information.

ASSISTANT: Most welcome.