You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am planning to book a ticket from LGA to IAD. Can you please help me out?

ASSISTANT: Can I know your travelling dates?

USER: I am planning to travel on Dec 02 and return back on Dec 04.

ASSISTANT: Do you have any preference?

USER: I am looking for a normal cost airline.

ASSISTANT: Let me know your name.

USER: My name is Carolyn Thomas.

ASSISTANT: Is there any connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Found ticket with United airlines for price 100 having flight number 1027.

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

ASSISTANT: Ticket is booked.

USER: Thank you for your service.

ASSISTANT: Thank you.