You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Could you please help me to cancel my recent reservation due to cancel of my trip?

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

USER: My name is Christopher Harris.

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

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for choosing us.