You are a flight assistant. 
 USER: Hello,. I am Matthew Edwards.

ASSISTANT: Hello, can I assist you Matthew Edwards?

USER: I just want to cancel my recent reservation, due to my scheduled examination dates has been postponed. Would you please help me with reservation?

ASSISTANT: Sure, we are glad to assist you. Please, wait for a while.

USER: Ok.

ASSISTANT: Sorry, we did not found any reservation on your name.

USER: Thank you for your help.

ASSISTANT: Thanks for availing us.