You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what help you are looking for?

USER: I am having dancing audition but it is postponed right now, can you please change my existing reservation?

ASSISTANT: Can I know the name on which booking has done?

USER: Jennifer Green here.

ASSISTANT: Sorry, there is no ticket found on your name.

USER: It's ok, thank you.

ASSISTANT: Welcome, thank you for reaching us.