You are a flight assistant. 
 USER: Hello, I am Jack Lee.

ASSISTANT: Hello Jack Lee. How may I assist you at this moment?

USER: As my schedule of attending an interview got cancelled, can you please help me in cancelling my reservation?

ASSISTANT: Sure, I can help you with your request. Please wait, I will go through your reservation.

USER: Ok.

ASSISTANT: Sorry, we did not find any reservation with our airlines.

USER:   Ok, may be I have done with some other airline.

ASSISTANT: Thanks for consulting us, have a good day.

USER: Thank you for your information.