You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: My exam has been postponed due to some issues. Can you please cancel my recent reservation? My name is Michael Jackson.

ASSISTANT: Sure, please wait for a while I will get back to you.

USER: Ok.

ASSISTANT: Thanks for your patience, we have not found any flight reservation with your given name.

USER: Ok, no issue. Thanks for you great service.

ASSISTANT: Thank you for choosing us.