You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to change my existing reservation as I want to spend some more days with my friends, please help me out.

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Can you please share your name to proceed further?

USER: Sure, my name is Emma Martin.

ASSISTANT: Please wait for a while.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting, there is no active reservation found on your name.

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

ASSISTANT: Thank you for availing us, have a nice day.