You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Due to sudden change of my business meeting because of some technical problem, I need to change my reservation so can you help me with that?

ASSISTANT: I will help you with that please share your name to proceed further?

USER: I am Amanda Brown.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: There is no reservation found in our database at the moment.

USER: Ok, no problem.

ASSISTANT: Thank you for choosing us.

USER: Thanks for the information.