You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I support you?

USER: I just want to cancel my recent reservation due to my convocation has been postponed. Would you please help me with cancellation?

ASSISTANT: Sure, we are happy to help you. May I know your name please?

USER: My name is Jacob Jones.

ASSISTANT: Thanks for your name, please give me a minute.

USER: Ok.

ASSISTANT: Thanks for your patience, we are sorry to inform you that no reservation was found based on your name.

USER: Ok, no worries at all.

ASSISTANT: Thanks for picking us, we hope to serve you again.

USER: Thank you for your response.