You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I be of your help?

USER: Myself Helen Hill. I need to cancel my recent reservation due to my scheduled examination dates has been postponed. Will you help me with that?

ASSISTANT: I understand your request, I'll help you in cancellation.

USER: Thank you for accepting my request.

ASSISTANT: Please wait a moment I will check the reservation status.

USER: Ok, I will wait for your response.

ASSISTANT: Thank you for waiting, sorry to inform you that there is no reservation found with this name.

USER: Ok, no issues. My brother might have cancelled my reservation.

ASSISTANT: Thank you for availing us.

USER: Thank you for your information.