You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for today?

USER: Owing an emergency, I want to cancel my reservation. Can you help me for that?

ASSISTANT: I am here to help you in cancellation of your reservation. Can you please let me know your name for checking the reservation status?

USER: My name is Debra Clark.

ASSISTANT: I have found reservation with your name. Are you sure you want me to cancel it?

USER: Ok, cancel my reservation.

ASSISTANT: I have cancelled your reservation as per your interest.

USER: Thank you for your help.

ASSISTANT: You are welcome, thank you for choosing our service. Hope you have a nice day ahead.