You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Would you help me in cancelling the reservation with the name of Samuel Lee?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, no reservation found with your name to cancel the reservation.

USER: Ok, no problem. Thank you for your information.

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