You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Gregory White.

ASSISTANT: How can I assist you, White?

USER: Due to some health problems, I would like to cancel my recent reservation. Please help me out.

ASSISTANT: Sure, please wait for a minute.

USER: Sure, take your time.

ASSISTANT: White, there is no reservation found with your details.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for contacting us.