You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, good evening. Welcome to smile agency, how can I assist you?

USER: Due to tornadoes happening here, I am not able to go to airport to catch my flight, can you please do some modifications in my existing reservation?

ASSISTANT: Sure, can I know your name to check your reservation details?

USER: Sure, my name is Frank moore.

ASSISTANT: There is no reservation found in our database to do changes in that, Moore.

USER:  It's alright, no problem. I think the ticket is not reserve properly while I am booking.

ASSISTANT: Yes, may be.

USER: Thank you for checking.

ASSISTANT: It's ok, thank you for reaching us.