You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

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

ASSISTANT: Sure, I will help you. Please help me with your name.

USER: I am Karen Garcia.

ASSISTANT: Please allow me a minute.

USER: Ok.

ASSISTANT: Karen Garcia, I am really sorry to inform you that there is no booking found on your name.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us. Have a great time.