You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Please help me in booking a flight ticket from LAX to IAD.

ASSISTANT: May I know your travelling dates?

USER: I want to fly on Sept, 26 and return back on Sept, 28.

ASSISTANT: Let me know your connection limit?

USER: I would prefer single connection.

ASSISTANT: Do you have any other preferences?

USER: I would prefer to major airlines only.

ASSISTANT: Can I have your good name?

USER: Lisa Mitchell here.

ASSISTANT: United Airlines providing connecting flight in the economy class with fare 100, shall I proceed for booking?

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed with flight number 1013.

USER: Thank you.

ASSISTANT: Thank you for opting us.