You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name to proceed further?

USER: I am Benjamin Gonzalez.

ASSISTANT: How may I assist you today Benjamin?

USER: I had done my booking last week to meet my grand mother.

ASSISTANT: Ok fine.

USER: But accidentally my grand mother came to my home.So, I would like to cancel my flight ticket.

ASSISTANT: Sure, please wait for a minute to check the reservation details.

USER: Ok.

ASSISTANT: Benjamin, I am really sorry to tell you. I cannot find any reservation with your name.

USER: Ok, Thank you for the information.

ASSISTANT: Is there anything else I can do for you?

USER: No, thank you.

ASSISTANT: It's my pleasure.