You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I best aid you today?

USER: IYesterday I have booked a ticket for Houston but your agent misplaced my origin code from Philadelphia to Houston. Can you please change my existing reservation?

ASSISTANT: Sure, that's what I am here. Can you please provide me your good name?

USER: My name is Cynthia Gonzalez.

ASSISTANT: Please wait for some time.

USER: Sure.

ASSISTANT: Unfortunately, there is no active reservation found on your name.

USER: That's not an issue. Thanks for your quick response.

ASSISTANT: Thank you.