You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you with today?

USER: My father planned for a trip, but it is cancelled unexpectedly. Can you help me to cancel his ticket now?

ASSISTANT: Sure, I can help you with that. May I know your name to proceed further?

USER: His name is Alexander Jackson.

ASSISTANT: Thank you for providing. Alexander, I have checked and see that there is no reservation found under your name.

USER: Its ok.

ASSISTANT: You are welcome.

USER: Thank you.

ASSISTANT: Thank you for contacting us.