You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: We actually planned a holiday trip, but due to some reason it is cancelled at last moment. So, please cancel my ticket.

ASSISTANT: Sure, we are here to help you. May I know your name please?

USER: I am Anna Phillips.

ASSISTANT: Thanks for your good name. Please wait for a while.

USER: Ok.

ASSISTANT: Thanks for your patience.

USER: Ok.

ASSISTANT: Sorry, we did not find any existing reservation based on your name.

USER: Ok, Thanks for your valuable service provided.

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