You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you help me to cancel my reservation?

ASSISTANT: Sure, can you please provide me your name to check the reservation?

USER: I am Nicholas Lee.

ASSISTANT: Sorry, there is no reservation with your given name.

USER: No issues, thank you for checking.

ASSISTANT: Thank you for reaching us.