You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I want to cancel my reservation as my grandfather is going through a surgery, help me in cancelling my reservation.

ASSISTANT: Sure, may I know your name?

USER: My name is Thomas Baker.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found in your name.

USER: No issue, thank you.

ASSISTANT: Thank you for choosing us.