You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you?

USER: I am Emma Rodriguez. I want to change my existing reservation due to some personal issues. Can you please help me?

ASSISTANT: Sure, I am happy to help you. Please wait for a moment.

USER: Sure,.

ASSISTANT: Thank you for your patience, No reservation is found based on your specified name.

USER: Thank you for the information.

ASSISTANT: Thank you for choosing us.