You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I just need your help in cancelling my recent reservation. Can you do it for me?

ASSISTANT: Sure, can you please tell your name to check the details of your reservation?

USER: Sure, my name is David Rodriguez.

ASSISTANT: Sorry, there is no reservation found by your name.

USER: No problem. Thank you for the information.

ASSISTANT: Thank you and have a nice day.