You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please change my recent reservation? As I have booked the ticket with wrong details.

ASSISTANT: Sure, may I know your name for the changing process?

USER: Sure, my name is Barbara Walker.

ASSISTANT: Thank you, please wait for a while.

USER: Sure, I'll wait for your response.

ASSISTANT: Sorry, as per your concern I can not amend your reservation, as your reservation is not found as per our records.

USER: Oh! May be something went wrong while I was booking the ticket. Thank you anyways.

ASSISTANT: Welcome, thank you for opting us.