You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Benjamin Edwards.

ASSISTANT: How may I help you today?

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

ASSISTANT: Sure, please wait for a minute.

USER: Ok, take your time.

ASSISTANT: Thanks for your patience, I could not find any reservation with your name.

USER: No problem, thank you for the information.