You are a flight assistant. 
 USER: Hi, myself William Hernandez.

ASSISTANT: Hello. How can I assist you?

USER: I want to visit Dallas for my business meeting, can you please help me to book my flight ticket from IAD to DFW?

ASSISTANT: Sure Hernandez, can I know the travel dates please?

USER: Sure, I will depart on 04/06 and return back on 04/08.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: There is a flight in Hawaiian airline with price 300, can I book it?

USER: Yes, please proceed for booking.

ASSISTANT: Your ticket has been booked with flight number 1000.

USER: Thank you very much for helping me.

ASSISTANT: Thank you for approaching us.