You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I best serve you now?

USER: Carolyn Harris on this end.

ASSISTANT: Ok,.

USER: I want to change my travelling dates in my previous booking today. Can you help me?

ASSISTANT: Sure, that's what I am here. Just wait for a while.

USER: Sure, I am waiting.

ASSISTANT: Thanks for being waiting. Unfortunately, there is no active reservation found on your name.

USER: No issues, thank you for checking with my booking.

ASSISTANT: Thanks for connecting us, have a nice day.

USER: You are most welcome.