You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: My exams are rescheduled, I want to cancel my recent reservation. Can you please help me out?

ASSISTANT: Hope you are feeling happy for your postponement of your exams. Sure, I will help you. Can you provide your name for the checking flight?

USER: My name is Matthew Anderson.

ASSISTANT: There is no reservation on your name.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing our service.

USER: I will search another flight. Thank you.