You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

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

ASSISTANT: Sure, I am here to help you. Please provide your planned trip dates.

USER: My travel dates are Jan 03 and Jan 05.

ASSISTANT: Is there any connection limit for you?

USER: I prefer connecting flight for this trip.

ASSISTANT: Do you have any other specifications?

USER: No, I don't have.

ASSISTANT: May I know your good name?

USER: My name is Brenda Edwards.

ASSISTANT: Thanks for providing details, there is a connecting flight found in United Airlines with a fare of 200 and the flight number is 1020. Shall I proceed?

USER: Please proceed to book my flight ticket in this airlines.

ASSISTANT: Ok, your ticket is reserved in an economy class.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.