You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

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

ASSISTANT: Sure, I will help you with that. Please wait for a minute.

USER: My name is Gregory Smith.

ASSISTANT: I am sorry to say that there is no reservation found.

USER: That's fine, thank you for giving the information.

ASSISTANT: Thank you for choosing us. Have a great day.