You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I am Stephen Thompson. Can you help me to cancel my reservation? Because my exam is postponed.

ASSISTANT: Sure, please wait for a minute.

USER: Sure, please check my details.

ASSISTANT: Thompson, happy to tell you I found a reservation with your name and I cancelled it.

USER: Thank you for your help.

ASSISTANT: My pleasure.