You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you now?

USER: Can you help me to change my reservation that I have done recently?

ASSISTANT: Sure, I will help you to change your reservation.

USER: Thank you.

ASSISTANT: May I know your good name please?

USER: Nicole Rodriguez here.

ASSISTANT: Please hold for a moment, while I search for your reservation in our data base.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name in our system data.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching us, we hope see you again.