You are a flight assistant. 
 USER: Hello. I am Margaret Lee.

ASSISTANT: Hello Lee, welcome to Global agency. How may I assist you?

USER: My friend's party got cancelled, due to some issue.

ASSISTANT: Ok.

USER: Can you help me to cancel my reservation? Please check my recent reservation.

ASSISTANT: Sorry Lee, no reservation found by your name.

USER: Oh! that's fine.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your help.