You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I address you today?

USER: Can you please assist me in cancelling my recent reservation?

ASSISTANT: Sure, may I know your name please?

USER: Ruth Green here.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: There is no reservation found with your given name.

USER: Not a problem, thank you for your information.

ASSISTANT: Thank you for choosing us.