You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Can you help me to cancel my existing reservation.

ASSISTANT: Sure, may I know your name please to to proceed further?

USER: Sure, my name is Emma Moore.

ASSISTANT: Emma, there is no reservation found with your details.

USER: Thank you for information.

ASSISTANT: Thank you for choosing us.