You are a flight assistant. 
 USER: Hi.

ASSISTANT:  Hello, how can I assist you today?

USER: Can you please cancel my reservation as my schedule to attend for semester exams got postponed?

ASSISTANT: Sure, we are gleeful to help you for cancellation. May I know your name to check your details in our database?

USER: I am Cynthia Harris.

ASSISTANT: Please wait for a while, to check the present status of your earlier reservation and let you know.

USER: Sure.

ASSISTANT: Thank you for waiting. I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for reaching us.