You are a flight assistant. 
 USER: Hi, I am Emily Allen.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, please wait. I will check and get back to you.

USER: Ok.

ASSISTANT: Unfortunately there is no reservation found matching with your name.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for opting us.