You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: As my plan to visit my grandmother's house got postponed, I need your assistance in changing my earlier reservation.

ASSISTANT: Ok, let me know your good name to check is there any earlier reservation on your name.

USER: My name is Betty Gonzalez.

ASSISTANT: Ok, Betty Gonzalez. Please standby.

USER: Ok.

ASSISTANT: Thanks for being hold, we did not find any earlier reservation on the name of Betty Gonzalez.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for choosing us, have a nice day.