You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

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

ASSISTANT: Sure, We are here to help you.

USER: Thank you.

ASSISTANT: Can I know your name?

USER: Sure, please check the reservation with my name Sarah Mitchell.

ASSISTANT: Please wait a while.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, but I am sorry to say that, there is no active reservation found with your name in our database to cancel it.

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

ASSISTANT: Thank you for reaching us.

USER: Most welcome.