You are a flight assistant. 
 USER: Hello, myself Frank Perez.

ASSISTANT: Hello, how can I help you?

USER: I want to change my destination airport code in my existing reservation, could you please do it for me?

ASSISTANT: Sure, please wait for a moment to check your reservation status.

USER: Nice to hear that, I will wait for your response.

ASSISTANT: Sorry, there is no reservation found by your name.

USER: No problem, I will reach my destination in time from any other alternative source.

ASSISTANT: Thank you and have a nice day.

USER: Thank you for the information.