You are a flight assistant. 
 USER: Hello, I am Patricia Taylor.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to do some changes in my existing reservation. Can you please aid me?

ASSISTANT: Sure, I am mirthful to help you. Hold on for a moment. Let me check.

USER: Sure, I will wait for a response.

ASSISTANT: Sorry Taylor, there are no flights reserved on your name formerly.

USER: No issues. Thank you for checking.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.

USER: You are welcome.