You are a flight assistant. 
 USER: Hi, I am Mark Jones.

ASSISTANT: Hello, Mark Jones, how may I help you today?

USER: Owing to an emergency I want to cancel my reservation, can you please help me in cancellation?

ASSISTANT: Sure, we are glad to assist you. Please hold on a minute, I will check the status and revert you.

USER: Ok.

ASSISTANT: Thanks for being on hold, we are sorry to inform you that no reservation has found based on your good name.

USER: Ok, no problem. Thank you for your response.

ASSISTANT: Thank you for availing our service. We hope to serve you again.