You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please book a flight ticket from DCA to LAX?

ASSISTANT: Sure, please share me your trip dates.

USER: I want to travel from Oct 31st to Nov 2nd.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: May I know your class preferences?

USER: I don't have any preferences.

ASSISTANT: Is there any time concern for you?

USER: No.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: Samantha Martinez here.

ASSISTANT: We found a Spirit airline and 1021 is flight number with a fare of 300. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.