You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Nancy Lewis.

ASSISTANT: How may I assist you?

USER: Can you help me in modification of my reservation as I my destination location got changed?

ASSISTANT: Sure, I am here to help you out.

USER: Thank you for considering my request.

ASSISTANT: Nancy Lewis, we regret to inform you that there is no reservation found on your name in our records.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for reaching us.