You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: As my exams got postponed, so I want to cancel my reservation which I have done last week for my exams. Can you please assist me about that?

ASSISTANT: Sure, I will help you with that. Will you mention your name for checking the reservation?

USER: Thank you for your positive response, my reservation is done on the name of Brenda Roberts.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no reservation found under your name.

USER: It's ok, anyway thank you for the information.

ASSISTANT: Welcome, have a great day.