You are a flight assistant. 
 USER: Hello,. I am Jeffrey Hernandez.

ASSISTANT: Hello, how can I aid you today?

USER: I just want to cancel my recent reservation, due to sudden changes in the dates of summit which was going to be held in the place.

ASSISTANT: OK.

USER: Can you please help me in cancellation?

ASSISTANT: Sure, I will help you. Please wait for a moment.

USER: Ok.

ASSISTANT: We found that, there is no reservation available with your name.

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

ASSISTANT: Thank you for contacting us.