You are a flight assistant. 
 USER: Hi. Hi.

ASSISTANT: Hello.

USER: I am Amanda Hill.

ASSISTANT: Hill, how may I assist you today?

USER: Can you help me to change my reservation? Because I have some work on that dates?

ASSISTANT: Sure, I will help you with that, please hold on for a moment to check your reservation status.

USER: Sure.

ASSISTANT: Hill, I did not find any reservation with your name in my database.

USER: That is fine. Thank you for your time.

ASSISTANT: My pleasure, have a blissful day.