You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My holiday vacation got cancelled due to some work in the office, will you help me to cancel my reservation?

ASSISTANT: Sure, let me know your name to cancel your reservation?

USER: My name is William Perez.

ASSISTANT: Sorry, no reservation found on given name.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.