You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

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

ASSISTANT: Sure, I will help you out. Please provide me your name to check the previous reservation details?

USER: Ok, my name is Margaret Lee.

ASSISTANT: Please wait a moment.

USER: Sure, take your time.

ASSISTANT: Sorry Lee, no reservation found on your name in our data base.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for reaching us.