You are a flight assistant. 
 USER: Hello, I'm Barbara Garcia.

ASSISTANT: Hello, how may I assist you?

USER: I would like to spend some more time with my family, so could you please change my reservation?

ASSISTANT: Sure, please hold on for a while.

USER: Ok sure, take your time.

ASSISTANT: Sorry Barbara, no tickets are showing on your name.

USER: That's ok, thank you.

ASSISTANT: Sorry for inconvenience, thank you for reaching us.

USER: Welcome.