You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: As my plan to watch a movie at orpheum theater got postponed, can you help me with changing my reservation please?

ASSISTANT: Sure, I am here to help you. May I know your name?

USER: Sure, my name is Karen Roberts.

ASSISTANT: Please be online for a while, let me check your reservation status in our database.

USER: Sure, take your time.

ASSISTANT: I am sorry to inform you that there is no reservation found under your name in our database.

USER: That's ok, thank you for the response.

ASSISTANT: You are welcome and thank you for choosing us.