You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I want to cancel my reservation which is done recently due to some heavy floods at Denver, can you please help me in this?

ASSISTANT: Sure, I am gleeful to help you in cancelling your reservation.

USER: Thank you.

ASSISTANT: On whose name I need to cancel the reservation?

USER: Sure, my name is Samuel Martin.

ASSISTANT: Please wait for a while so that I can check for the previous reservation status.

USER: Sure, I will wait.

ASSISTANT: Thank you for waiting. Martin, here I have found the reservation on your name.

USER: Ok, please cancel it.

ASSISTANT: The reservation has been cancelled successfully.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us, have a great day.