You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Can you aid me to cancel my reservation due to an emergency?

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

USER: Dorothy Roberts here.

ASSISTANT: Please allow me a minute.

USER: Sure.

ASSISTANT: Thank you. I am really sorry to inform you that there is no booking found on your name to cancel.

USER: Thank you for the help.

ASSISTANT: Dorothy Roberts, thank you for reaching us. Have a great time.