You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Unfortunately, I want to cancel my reservation which is done recently due to some health issues, can you please help me in this intent?

ASSISTANT: Sure, may I know your name?

USER: Sure, my name is Kevin Williams.

ASSISTANT: Please give me a moment to check your ticket status.

USER: Ok, take your time.

ASSISTANT: Sorry Williams, no reservation is available by your name.

USER: That's fine. Thank you for your service.

ASSISTANT: Thank you for contacting us.