You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Donna Garcia.

ASSISTANT: How may I help you?

USER: I want to go SFO next month to meet my friends there, can you please book a flight ticket from AUS?

ASSISTANT: Sure, may I know the dates of your trip?

USER: I want to taker off on 10/21 and book my return ticket also on 10/23.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: Delta airline is providing a flight which costs 100 with a single connection limit. Would you like to book this flight?

USER: I am ok with this flight, please proceed.

ASSISTANT: The ticket booking is done in 1021 flight number, have a happy journey.

USER: Thank you for your service.

ASSISTANT: You are welcome.