You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

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

ASSISTANT: Sure, please share me your trip dates.

USER: Ok, please book a flight ticket for the dates Oct 4 and Oct 6th respectively.

ASSISTANT: Is there any time concern for you?

USER: No.

ASSISTANT: Do you need direct flight or connecting flight?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: May I know your class preferences?

USER: No.

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

USER: Yes, please book a ticket on the name Michelle Mitchell.

ASSISTANT: We found a Spirit airline and 1013 is flight number with a fare of 200.

USER: Ok, please book the best flight available.

ASSISTANT: Shall I proceed?

USER: Yes.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thank you for the help.

ASSISTANT: Thank you for opting us.