You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I address you?

USER: I am Emily Lopez, I want to change my destination airport code of previous reservation. Can you please help me to change?

ASSISTANT: Sure, please allow me a moment to check the current status of your formerly made reservation and revert you.

USER: Sure.

ASSISTANT: Thanks for waiting Emily Lopez, we tried but could not find any reservation active by your name in our data base.

USER: Ok, thanks for checking my reservation status.

ASSISTANT: Thank you for choosing us.