You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I be your helping hand today?

USER: Owing an emergence, I want to cancel my recent reservation. Can you help me with it?

ASSISTANT: Sure, can I have your name please?

USER: My name is Margaret Miller.

ASSISTANT: We found a reservation with your name. Shall I proceed with cancelling?

USER: Ok, please go with cancellation.

ASSISTANT: Your ticket has been cancelled.

USER: Thanks for the help.

ASSISTANT: Thanks for your presence. We hope to serve you again.