You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Matthew Thomas.

ASSISTANT: How may I help you at this moment?

USER: I want to cancel my reservation, due to my health issues. Could you help me in the cancellation?

ASSISTANT: Sure, please wait for sometime.

USER: Sure.

ASSISTANT: There is no active reservation found on your name for the cancellation.

USER: Not an issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you.