You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. May I know your name?

USER: I am Samantha Carter.

ASSISTANT: How can I serve you?

USER: I want to reschedule my recent reservation as the arts and crafts festivals helding at  atlanta got postponed. So can you help me with updating my reservation.

ASSISTANT:  Sure, we are here to help you. .Please wait a moment.

USER: Ok.

ASSISTANT: Thanks for your time. We didn't found any reservation by this name.

USER: That's Ok, Thanks for your time.

ASSISTANT: Thank you for opting us.