You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you today?

USER: Can you please help me to change my reservation on the name of Edward White?

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time, there was no reservation found on your name to change it.

USER: No worries, thank you.

ASSISTANT: Thank you for choosing us.