You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you for the day?

USER: I am Brian Walker. Can you help me in cancelling my recent reservation due to my health issue?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please wait for a while, I will check your previous reservation.

USER: Sure.

ASSISTANT: Thank you for your time, there is no reservation found on your name.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for contacting us.