You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I need to cancel my reservation as my exams got preponed I need to stay back in my hometown. Can you please help me out?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your name?

USER: I am Patricia King.

ASSISTANT: Ok, wait for some time.

USER: Ok.

ASSISTANT: Thanks for waiting we found reservations on your name. Shall I proceed for cancel your ticket?

USER: Ok, please cancel my reservation.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you for assisting me.

ASSISTANT: Thanks for choosing us.