You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I need to book a flight ticket from IAD to LAX, can you help me in booking a flight ticket?

ASSISTANT: Please provide your travelling dates?

USER: Sure, my scheduled dates are Nov 20 and Nov 22.

ASSISTANT: Would you like to travel in economy class or business class?

USER: I a comfortable with any class.

ASSISTANT: Do you have any other preferences?

USER: I prefer maximum one connection.

ASSISTANT: Can I know your name?

USER: Sure, Lisa Adams here.

ASSISTANT: Found ticket with Southwest airlines for price 100. Shall I book a ticket?

USER: Yes, you can.

ASSISTANT: Your ticket is booked in an economy class having flight number 1020.

USER: Thank you for your assistance.

ASSISTANT: Thank you.