You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you today?

USER: I am Samantha Rodriguez.

ASSISTANT: Ok.

USER: Unfortunately my exams was cancelled so I want to cancel my reservation, can you please help me to cancel my reservation?

ASSISTANT: Sure, I will help you with that. Please wait a while.

USER: Ok, I will wait.

ASSISTANT: Thank you for waiting. 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.

ASSISTANT: Thank you for choosing us.