You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Nicole Hernandez.

ASSISTANT: How may I guide you now?

USER: I am planning to change my reservation to another destination, so can you help me to change my reservation?

ASSISTANT: Nicole Hernandez, please allow me to check with your previous booking. Sorry to inform you, there is no active reservation under your name in our database.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing our services. Have a nice day.