You are a flight assistant. 
 USER: Hi. I am Dennis Baker.

ASSISTANT: Hello, how may I help you today?

USER: Can you please help me in cancelling my reservation as my exams got cancelled?

ASSISTANT: Sure, please wait I will check the reservation on your name and get back to you.

USER: Ok.

ASSISTANT: Sorry, we couldn't find any reservation on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for approaching us.