You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you at this moment?

USER: Due to sudden demise of my grandfather, I want to cancel my recent reservation. Will you assist me in that?

ASSISTANT: Sure, can I know on which name ticket has been reserved in the past?

USER: I made a reservation earlier on the name of Alexander Nelson.

ASSISTANT: Ok, wait a moment, I will check it out weather your reservation is existed or not.

USER: Sure.

ASSISTANT: We are hardly trying to found your reservation but we are sorry to inform you that, we could not found any reservation with your name.

USER: Ok, thank you for your information.

ASSISTANT: Thank you for availing us.