You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Please help me to book a flight ticket from IAH to IAD.

ASSISTANT: Can I know your travelling dates?

USER: My travel dates are Aug, 3 and Aug, 5.

ASSISTANT: Is there any preference?

USER: I need connecting flight.

ASSISTANT: Can I know your name?

USER: Steven Phillips here.

ASSISTANT: Found ticket with Hawaiian airlines for price 100 having flight number 1000.

USER: Yes, please book.

ASSISTANT: Ticket is booked.

USER: Thank you.

ASSISTANT: Thank you.