You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know your name, please?

USER: I am Carolyn Hernandez.

ASSISTANT: Carolyn Hernandez, how may I help you?

USER: Will you please assist me in changing my reservation as my plan to go for a trip got preponed?

ASSISTANT: Ok, please be on hold.

USER: Ok.

ASSISTANT: We could not find any reservation on your name.

USER: It's ok. Thank you for the information.

ASSISTANT: Thanks for connecting with us.