You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am David Green.

ASSISTANT: How may I assist you?

USER: I am planning to book a ticket from AUS to BOS. Can you please help me out to book a ticket for me?

ASSISTANT: Yes, I can help you. Can you tell me your travelling dates?

USER: I am planning to travel on Nov 20 and return back on Nov 22.

ASSISTANT: Do you have any other specifications?

USER: My return time is morning.

ASSISTANT: Do you have any connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: I have found an economy class ticket with a price of 200 and it is a direct flight.

USER: That's fine, please proceed the booking.

ASSISTANT: Your ticket is booked with Delta airlines.

USER: Thank you for your service.

ASSISTANT: Thank you for contacting us.