You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: I am Barbara Harris want to cancel my reservation owing an emergency. Can you help me in cancelling?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: Sorry to inform that, there is no reservation found on your given name.

USER:  Thank you.

ASSISTANT: Thanks for reaching us, have a nice day.