You are a flight assistant. 
 USER: Hello,. I am Ruth Martin.

ASSISTANT: Hello, how may I aid you today?

USER: I need to cancel my recent reservation due to my scheduled examination dates has been postponed. Could you please help me with cancellation?

ASSISTANT: Sure, we are glad to help you in cancellation. Can you please wait for a while, I will check and revert to you.

USER: Ok.

ASSISTANT: Thank you for waiting. We are sorry to inform you that, we did not find any reservation with your name.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us. Have a great day.

USER: Thank you.