You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I am looking to change the travel details in the existing reservation. Can you please help me with that?

ASSISTANT: Sure, I am here to help you.

USER: Thank you for considering my request.

ASSISTANT: Hold on for a moment. Let me check. May I know on whose name the ticket has been reserved formerly?

USER: Ok, please check the ticket status with the name Angela Baker.

ASSISTANT: Ok. Sorry Angela Baker, there are no flights reserved on your given name formerly.

USER: It's ok, thank you for checking my ticket status.

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

USER: You are welcome.