You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to change my previous reservation due to floods in Atlanta, can you help me?

ASSISTANT: Sure, could please provide your name to check your complete reservation details.

USER: Jacob Taylor is my name of previous booking.

ASSISTANT: Ok, please wait a moment.

USER: Ok, take your time.

ASSISTANT: Sorry to say, I did not find any details regarding your reservation in my database.

USER: No problem, thank you for checking my reservation status.

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

USER: You are most welcome.