You are a flight assistant. 
 USER: Hello, I am Justin Lewis.

ASSISTANT: Hello, how may I assist you?

USER: Due to some terrorist threat going on in the place I wanted to visit, I want to cancel my ticket. Can you aid me?

ASSISTANT: Sure, hold on for a moment. Let me check.

USER: Take your time.

ASSISTANT: Sorry Justin, there are no flights reserved on your given name.

USER: No issues. I will check with my friends.

ASSISTANT: Ok, thank you for choosing us.

USER: Thank you for checking.

ASSISTANT: Welcome.