You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how could I serve you today?

USER: As my Grandma is hospitalised, so I should be there to look after her in hospital. So, cancel my reservation.

ASSISTANT: May I have your name please?

USER: I am Dorothy Phillips.

ASSISTANT: Please wait a minute. I will check and let you know.

USER: Ok.

ASSISTANT: We found a reservation on your name.Shall I proceed for cancellation?

USER: Sure, you can proceed.

ASSISTANT: Thank you.

USER: Thanks for your help.