You are a flight assistant. 
 USER: Hello, I am Elizabeth Garcia.

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. Can you please help me in cancellation?

ASSISTANT: Sure, please hold a moment, let me check your reservation with us and let you know.

USER: Ok.

ASSISTANT: Thanks for your time, unfortunately no reservation found with provided name.

USER: I will wait. Ok, thank you.

ASSISTANT: Thank you for approaching us.