You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How may I assist you?

USER: I want to cancel my recent reservation due to my interview got postponed.

ASSISTANT: Sure, may I know your name to check the reservation list?

USER: I am Alexander Martinez.

ASSISTANT: Please be on hold I will check and revert to you.

USER: Ok.

ASSISTANT: Sorry, I found no reservation in your given name.

USER: That's ok.

ASSISTANT: Thank you for opting us.

USER: Thank you for your response.