You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Brandon Collins here.

ASSISTANT: How can I assist you?

USER: I want to cancel my reservation which was done earlier due to my exams postponed. Can you please help me in that?

ASSISTANT: Sure, I can help you with that. Please be online.

USER: Ok, I will wait for your response.

ASSISTANT: Brandon, there is no reservation found under your name to do cancellation.

USER: That's ok, no problem. Anyway thank you for the information.

ASSISTANT: Thank you for choosing us.