You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I need to do some changes in my previous flight booking that I have booked a ticket with wrong airport codes, can you please help me with that?

ASSISTANT: Sure, I can help you with that. May I know your good name please?

USER: Sure, Linda Gonzalez here.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Linda Gonzalez, there is no active reservation found under your name to do modifications in that.

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for choosing us.