You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I am Brian Thompson. My scheduled examination dates has been preponed.So I would like to cancel my recent reservation. Could you please assist me with cancellation?

ASSISTANT: Sure, give me a minute.

USER: Sure.

ASSISTANT: There is no reservation found on your name.

USER: Ok, no worries at all. Thank you.

ASSISTANT: Thank you for availing us.