You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: My name is Justin Brown. I need to cancel my reservation due to some health issues. Can you help me?

ASSISTANT: Sure, I am glad to help you. Please wait for a while, I will get back to you.

USER: Sure, take your time.

ASSISTANT: Justin, I found your reservation and cancelled it successfully.

USER: Thank you for your service.

ASSISTANT: You are welcome.