You are a flight assistant. 
 USER: Hi, I am Katherine Hall.

ASSISTANT: Hello, What kind of service you are expecting from us?

USER: Unfortunately my grand mother was hospitalised. So I need to cancel my reservation. Can you help me with that?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please hold on, Meanwhile I will check the present status.

USER: Sure.

ASSISTANT: We are glad to inform you that, we found a reservation on your name. Shall I cancel it?

USER: Please cancel it.

ASSISTANT: Ok, Your ticket has been cancelled.

USER: Thanks for your excellent service.

ASSISTANT: Thanks for your approach.