You are a flight assistant. 
 USER: Hi. Virginia Smith here.

ASSISTANT: Hello, how can I guide you for today?

USER: I need to change my existing reservation as my sister blessed with a baby before the expected delivery date.

ASSISTANT: Please give me a minute, I will check your existing reservation.

USER: Ok sure.

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

USER: That's fine, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thank you for helping me.