You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I need to cancel my reservation as my college orientation day program got cancelled. Can you help me?

ASSISTANT: Sure, I am here to help you for this. Let me check your reservation status in our database.

USER: Ok, please check the reservation mad by the name William Brown.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry to inform, no reservation is found with your criteria.

USER: Ok fine, thanks for your response.

ASSISTANT: Thank you very much for contacting our agency.