You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Kevin Garcia here.

ASSISTANT: Nice meeting you Kevin.

USER: Due to Inconvenience of my work, I want to change my reservation. Can you please help me for that?

ASSISTANT: Sure, I will help you. Please wait a moment to check your previous reservation.

USER: Ok, I will wait.

ASSISTANT: We regret that, there is no reservation with your name in our records.

USER: Anyway, thanks for the information.

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