You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I mistakenly entered my existing reservation journey details wrong. So, I want to change my reservation.

ASSISTANT: Ok.

USER: Can you help me?

ASSISTANT: Sure, please tell me your name.

USER: Myself Linda Lewis.

ASSISTANT: Sorry Linda, there is no reservation found with your name.

USER: That's ok, no problem. Thank you for your help.

ASSISTANT: Thank you for choosing us.