You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I want to book a ticket from DCA to BOS, can you please help me?

ASSISTANT: Sure, can you share your trip dates?

USER: I want to depart on Dec 23 and return on Dec 25.

ASSISTANT: Do you have any preferences?

USER: I need a single connecting flight.

ASSISTANT: May I know your name?

USER: My name is Anna Thompson.

ASSISTANT: There is a connecting flight with number 1023 in airline Frontier, the fare is 100 in economy class. Can I book it?

USER: You can proceed.

ASSISTANT: Your ticket is reserved.

USER: Thank you.

ASSISTANT: Thank you for reaching us.