You are a flight assistant. 
 USER: Hello, I am Rachel Campbell.

ASSISTANT: Hi. How can I help you Rachel Campbell?

USER: I want to change my reservation, can you assist me?

ASSISTANT: OK. Give me a moment?

USER: Sure.

ASSISTANT: Sorry we couldn't find any reservation on your name.

USER: Ok, not an issue. Thanks for your help.

ASSISTANT: Thank you for reaching ours.