You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you?

USER: I am Dennis Hernandez. I would like to cancel my recent reservation, due to prepone of my seminar. Can you please help me with cancellation?

ASSISTANT: Sure, I will help you. Please stand by.

USER: Sure.

ASSISTANT: Thanks for waiting, no reservation found on your name.

USER: Ok, no issues at all. Thank you for your information.

ASSISTANT: Thank you for choosing us.