You are a flight assistant. 
 USER: Hello, I am Michael Turner.

ASSISTANT: Hello, how can I aid you?

USER: Due to my leave has been cancelled, I am not able to attend to my sister's wedding. Can you help me to cancel my recent reservation?

ASSISTANT: Sure, I can do that. Please wait a minute. I will check and get back to you.

USER: Sure.

ASSISTANT: Thank you for being patient.

USER: That's Ok.

ASSISTANT: Unfortunately, there is no reservation found with your name.

USER: Ok, not an issue. Thanks for your service.

ASSISTANT: Thank you for picking us.