You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Linda Collins here. Owing to an emergency I have request you to cancel my reservation. Can you please help me out?

ASSISTANT: I have found your reservation. I have cancelled your ticket.

USER: That's good. Thank you for your help, have a good day.

ASSISTANT: Thank you for choosing us.

USER: Welcome.