You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I render you today?

USER: I am Ryan Collins.

ASSISTANT: Ok.

USER: I need to cancel my reservation due to some personal issues.So can you help me with cancellation of my reservation?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, we found the reservation on your name, are you sure you want to cancel it?

USER: Please cancel.

ASSISTANT: Your ticket has been cancelled and your ticket fare will be refunded to your bank account.

USER: Thank you for your kind service.

ASSISTANT: Thank you for choosing us.