You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: My name is Betty Taylor. I want to change my reservation which I had done recently. Can you help me?

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

USER: Ok, take your time, I will wait.

ASSISTANT: Betty, I did not find any reservation with your name in my database. Thank you for reaching us.

USER: Ok, may be my friend did not done my reservation properly. Thank you for assisting me.

ASSISTANT: You are welcome.