You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me to cancel my recent reservation?

ASSISTANT: Let me know your name to check your reservation?

USER: I am Charles Adams.

ASSISTANT: I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: Thank you for choosing us.