You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Scott Thomas.

ASSISTANT: Scott Thomas, how may I assist you with today?

USER: I want to change my travel dates in my previous reservation so can you please help me with that?

ASSISTANT: Sure, I will help you.

USER: Thank you for your response.

ASSISTANT: Please allow me a minute.

USER: Ok.

ASSISTANT: I regret to inform you that there is no active booking on your name.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us. Have a great day.