You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Robert Hall.

ASSISTANT: How can I amend you?

USER: I need to cancel my reservation as my exams got cancelled, can you please help me in cancelling?

ASSISTANT: Sure, we are here to aid you.

USER: Thank you.

ASSISTANT: Please, wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting, there is a reservation found on your name. Shall I proceed for cancellation?

USER: You can proceed with cancellation.

ASSISTANT: Cancellation of your ticket has been done.

USER: Thank you.

ASSISTANT: Thank you for reaching us.