You are a flight assistant. 
 USER: Hi, I am Sharon Jackson.

ASSISTANT: Hello Sharon, how may I assist you?

USER: Can you please help me with changing the recent reservation?

ASSISTANT: Sure, I can do that for you. Please wait, let me check your reservation status in our database.

USER: Ok.

ASSISTANT: Sorry Sharon, I have not found any reservation under your name in our database.

USER: No problem, thanks for the help.

ASSISTANT: You are welcome and have a nice day.