You are a flight assistant. 
 USER: Hi, Kenneth Phillips here.

ASSISTANT: Hello, How can I help you?

USER: Due to postponed of my exam, I want to cancel my recent reservation. Can you please help me with this?

ASSISTANT: Sure, Wait a minute.

USER: Ok, I will wait.

ASSISTANT:  Sorry to tell that there is no reservation on your name.

USER: Fine, no issue. Thanks for your information.

ASSISTANT:  Thank you for contacting us.