You are a flight assistant. 
 USER: Hello, I am Samuel Harris.

ASSISTANT: Hello, how may I help you?

USER: My exams got postponed due to the whether condition in Denver, could you please help me in cancellation of my resent reservation?

ASSISTANT: Yes, I am here to help you. Yes, we found a reservation to cancel it. Shall I proceed for canceling?

USER: Ok, proceed for cancellation.

ASSISTANT: Ok, your reservation has been canceled. Thanks for opting us.

USER: Thank you for your service.