You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I made a reservation on the name of Raymond Hall, but your agent misplaced my origin code. Can you please help me to change my reservation?

ASSISTANT: Sorry for inconvenience caused. Please wait for a moment, I will check with the reservation on your name to change it.

USER: Sure, I will wait.

ASSISTANT: Thanks for your time. We regret that, there was no reservation found on your name.

USER: Ok, Thank you for providing information.

ASSISTANT: Thank you for consulting our service. Have a nice day.