You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Due to personal issues, I would like to change my existing reservation. Can you help me?

ASSISTANT: Sure, I will help you. Please provide your name to check the status of reservation.

USER: My name is Susan Gonzalez.

ASSISTANT: Susan, no reservation has been found on your name.

USER: Its ok, thank you for the information.

ASSISTANT: Thank you for approaching us.