You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I have to cancel  my reservation due to  my planned event got  cancelled. So  please help me with that.

ASSISTANT: Sure, I can cancel your reservation right now. Before that I need to know your good name please?

USER: Thank you. Please check the  reservation with my name Mary Clark.

ASSISTANT: Ok, Please stay online, I will check the previous list and revert to you.

USER: Sure,  take your time to check.

ASSISTANT: Thanks for remaining so positive. We are sorry to say that, there is no active reservation found on your name.

USER: Oh! It  may not be booked  properly due to server issues while  booking. Anyway, thank you for  your time.

ASSISTANT: Thanks for reaching us.

USER: Most welcome.