You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be at your service today?

USER: Can you please help me to cancel my recent reservation?

ASSISTANT: Sure, may I know your name please?

USER: Linda Lopez here.

ASSISTANT: Sorry, there is no reservation matching with your name in our portal.

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

ASSISTANT: Thank you for choosing us.