You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you help me to book a ticket from my origin airport DCA to my destination airport LAS?

ASSISTANT: Sure, We are here to help you. Can I know your travelling dates?

USER: Ok, please can you book a ticket for the dates Sept 21 and 23rd respectively?

ASSISTANT: Do you need any break?

USER: Ok, please book a connecting flight.

ASSISTANT: May I know your name?

USER: Ok, please make the reservation on the name Andrew Perez.

ASSISTANT: Is there any other requirements?

USER: NO.

ASSISTANT: We found a connecting flight with an AA airlines, flight number:1022. Can I reserve it?

USER: Book a ticket for me.

ASSISTANT: Your flight ticket has been reserved with an economy class.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.