You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Robert Hernandez.

ASSISTANT: How can I aid you?

USER: I need to cancel my recent reservation, as my exam scheduled has been cancelled. Please help me in cancelling?

ASSISTANT: Sure, I can help you. Please wait a while.

USER: Ok.

ASSISTANT: Thanks for being waiting. We didnt found any reservation by this name.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you for contating us.