You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: My name is Kathleen Lopez. I am looking for some help in my ticket cancellation due to some health issues, can you help in that one?

ASSISTANT: Yes, I can help you with that. Sorry to say that there is no reservation found on your name in our database.

USER: Ok, I think my brother might cancelled the previous booking.

ASSISTANT: Ok.

USER: Thank you for your quick hand help in providing the information.

ASSISTANT: Thank you for contacting us. Feel free to reach us anytime.

USER: Thank you.