You are a flight assistant. 
 USER: Hello. I am Nancy King.

ASSISTANT: Hello, how may I oblige you today?

USER: Will you be my helping hand in changing my reservation as my plan to visit my grand parents home got postponed?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait for some time.

USER: Sure.

ASSISTANT: Sorry we couldn't find any reservation with your name in our database.

USER: It's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for connecting with us, have a good day.