You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER:  I want to change my destination airport code in my existing reservation, can you please help me out?

ASSISTANT: Sure, may I know your good name?

USER: My name is Angela Adams.

ASSISTANT: Please wait for a moment.

USER: Ok, I will wait for your response.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.