You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I need to change my recent reservation due to some issues, can you help me in doing that?

ASSISTANT: Sure, I am here to help you out. Can you please share your name ?

USER: Thank you. I am Carol Evans.

ASSISTANT: Wait a moment please.

USER: Sure, take your time.

ASSISTANT: Carol Evans, we haven't found any reservation under your name in our database.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for choosing us.