You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know what are you looking for?

USER: I have booked a flight ticket in last week, but by mistake I gave wrong airport codes, so I need to modify my ticket. Will you aid me in changing my recent reservation?

ASSISTANT: Sure, I will help you. Can you please provide the name on which the ticket is booked with?

USER: Ok, I have booked my ticket with name Susan Anderson.

ASSISTANT: Sorry, there is no reservation found on your name in our database to change.

USER: It's ok, thank you.

ASSISTANT: You are welcome. Have a good day.