You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Due to some problem in my family, can you cancel my reservation?

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

USER: Please check my reservation on Helen Gonzalez.

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

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: Thank you and have a nice day.