You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: I am Stephen Robinson. Can you help me in cancelling my recent reservation, as my exam is postponed?

ASSISTANT: Sure, I will help you with that.

USER: Ok.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation on your name in our records.

USER: No issue, thank you.

ASSISTANT: Thank you for reaching us.