You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: This is Matthew Jackson. Book a connecting flight, within fare 5000, to reach Las Vegas, LAS?

ASSISTANT: Sure, please help me with your source code.

USER: Ok, My source is Washington, DCA.

ASSISTANT: What are your preferable dates to travel?

USER: I need to visit Four Queens Casino on 10/10, So I need to start on 10/09. I will catch return flight on 10/11.

ASSISTANT: Ok, please give me a moment to check the availability of flights.

USER: Sure, make it quick.

ASSISTANT: We found a connecting flight in Hawaiian airline at a price 100 from flight number 1000.

USER: It is perfect, go on with booking.

ASSISTANT: Your booking is done on the name Matthew Jackson.

USER:  Thanks for your assistance.

ASSISTANT: Thank you for choosing us.