You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you right now?

USER: I need to change my current reservation due to urgent meeting, can you help me with that?

ASSISTANT: Sure, I am oblige to help you and may I know your name please?

USER: I am Susan Perez.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for being on hold, I have checked with your information in my portal to change your booking but is displayed that there is no user name found to change it.

USER: That's ok, thank you.

ASSISTANT: Thank you for consulting us, have a great day.