You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Emma Evans.

ASSISTANT: How may I assist you?

USER: I would like to change my destination airport code, please help me in changing my existing reservation.

ASSISTANT: Emma Evans, please allow me to check with your previous booking.

USER: Sure, take your time.

ASSISTANT: Sorry to say, no reservation was found by your name.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for consulting with us.