You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Thomas Lopez.

ASSISTANT: How may I assist you at this moment?

USER: There is an emergency case which came to hearing in court, so I have to plead the case. Can you please help me in changing my reservation?

ASSISTANT: Sure, I am here to help you. Please be on hold for a moment.

USER: Sure.

ASSISTANT: Thomas Lopez, I didn't find any active reservation under your name in our database.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for utilising our service.