You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I be your helping hand?

USER: Can you please cancel my reservation which is done earlier? As I need to stay back at my hometown due to sudden illness.

ASSISTANT: Sure, may I know your name?

USER: Thank you, Christopher Thomas is my name.

ASSISTANT: We found your reservation and it has been cancelled successfully. We will return your pay with in a week.

USER: Thank you for your help. I really appreciate your customer service.

ASSISTANT: Thank you for opting us.