You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your good name?

USER: I am Eric Hernandez.

ASSISTANT: How may I help you today?

USER: I need to cancel my recent reservation due to postpone of my practical exam. Could you please help me in cancelling my reservation?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for waiting there is no reservation found on your name in our reservation data base.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for availing with us.