You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Carolyn Martinez, can you help me to change my reservation?

ASSISTANT: Sure, wait a moment.

USER: Because, I have a work. Sure.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: Ok, that's fine. Thank you.

ASSISTANT: Thank you for reaching us.