You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: Please assist me in booking a ticket from DC-IAD to NV-LAS.

ASSISTANT: Kindly mention your travelling dates please?

USER: I want to travel on Aug 9th and return on Aug 11th.

ASSISTANT: May I know your budget for flight ticket?

USER: I need a ticket within price 5000.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: There is a flight available with an airline Southwest of flight 1006 and cost is 100. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Can I know your name please?

USER: I am Charles Garcia.

ASSISTANT: Your ticket has been booked on name of Charles Garcia.

USER: Thank you.

ASSISTANT: Thank you.