You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me with cancelling my reservation?

ASSISTANT: Sure, I am here to help you for this. May I know your name please?

USER: Ok, I have booked my previous ticket by the name of Stephen Perez.

ASSISTANT: Just a moment, let me check your reservation status in our records.

USER: Sure, I will be waiting for your response.

ASSISTANT: Sorry for inconvenience, no reservation is found with your criteria.

USER: Oh! That's fine. Anyways, thank you for checking.

ASSISTANT: Thank you very much for contacting our agency.

USER: Welcome.