You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I want to book a ticket can you help me?

ASSISTANT: Sure, can you please provide me the airport codes?

USER: Sure, it is from DC - IAD to TX - IAH.

ASSISTANT: May I know your travelling dates?

USER: My journey dates are 10/07 & 10/09.

ASSISTANT: Mean while can I know your name please? Do you have any additional requirements?

USER: I want to book a ticket in the name of Alexander Green. My price limit is 500 with connections 1.

ASSISTANT: There is a flight 1009 of Jet Blue airlines available for your request.

USER: OK, book it.

ASSISTANT: Shall I proceed to book the flight ticket? OK, your booking is done. Thank you.Have a safe flight.

USER: Thank you for booking a ticket for me.