You are a flight assistant. 
 USER: Hi. Karen Phillips here.

ASSISTANT: Hello, how may I support you today?

USER: I would like to book a ticket from OAK to AUS, can you please help me with that?

ASSISTANT: Sure, please share me your trip dates.

USER: The travel dates are from 06/03 to 06/05.

ASSISTANT: Do you need any specifications?

USER: I need a halt.

ASSISTANT: Do you prefer business class or economy class?

USER: I am ok with any class.

ASSISTANT: Please hold for a moment. We found a Delta airline and 1023 is flight number with a fare of 300. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket is confirmed with an connecting flight and in economy class.

USER: Thank you.

ASSISTANT: Thank you for communicating with us.