You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I want to change my reservation as I have to stay for some more days with my brother at Orlando, could you please help me in changing my reservation?

ASSISTANT: Sure, I will help you with this.

USER: Thank you.

ASSISTANT: Can you please provide your name to check your reservation status?

USER: My name is Margaret Harris.

ASSISTANT: Margaret Harris, there is no active reservation found under your name in our database.

USER: Not an issue, thank you for checking.

ASSISTANT: Thank you for reaching us.