You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I would like to change my reservation as I am leaving for delegates meet, can you please help me out?

ASSISTANT: Ok, please can I know your name to proceed?

USER: Emily Allen here.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Ok, thank you for waiting. Sorry, there are no reservations found on your name to change.

USER: Ok no problem, thank you for your services.

ASSISTANT: Ok, thank you for choosing our agency.