You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I serve you today?

USER: I am Michelle Harris. 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: Sure, I am glad to help you. Please be on hold.

USER: Thank you. Sure.

ASSISTANT: There is no reservation found on your name in our database.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you.