You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure, can I know your name?

USER: I am Charles Anderson.

ASSISTANT: We found your reservation and cancelled successfully.

USER: Thank you for your kind service.

ASSISTANT: Thank you for reaching us.