You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: My business meeting got postponed, can you please help me in changing the reservation?

ASSISTANT: Sure, may I know your name to check for the previous reservation?

USER: I am Benjamin Williams.

ASSISTANT: Please allow me a moment.

USER: Ok.

ASSISTANT: There is no reservation found under your name.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for contacting us.