You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Ronald Davis here. I want to meet my nephew to discuss about his marriage, so please book my ticket from OAK to AUS.

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: My itinerary dates are 12/20 and 12/22.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: We are pleased to inform you that we have found a Delta airline, flight number-1021 connections-1 and price limit is 100.

USER: Please book my ticket.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Your welcome.