You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Can you book a flight from Washington to phoenix?

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: I will fly on Aug 02 and return on Aug 04.

ASSISTANT: May I know your source airport code?

USER: My source airport is IAD.

ASSISTANT: Can you provide me your preferable connection to travel?

USER: I prefer a connecting flight.

ASSISTANT: By fetching your details, I got a direct flight in economy class with airfare about 100. Can I proceed with it?

USER: Please proceed with booking.

ASSISTANT: Your ticket has been booked with 1008 flight in Hawaiian airlines.

USER: Thank you for your service.

ASSISTANT: May I know your name for documentation purpose?

USER: My name is Helen Robinson.

ASSISTANT: Thank you.