You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me to book a ticket from AUS to BOS?

ASSISTANT: Let me know your travelling dates.

USER: My travelling dates will be on  Dec 24 to Dec 26.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Is there any airline preference?

USER: No.

ASSISTANT: Can I know your name?

USER: Anna Brown here.

ASSISTANT: Connecting flight can be booked with United airlines for price 100 having flight number 1026.

USER: You can proceed.

ASSISTANT: Ticket is booked.

USER: Thank you.

ASSISTANT: Thank you.