You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Could you please help me to book a flight ticket from IAD to attend a seminar?

ASSISTANT: Sure, I am here to help you out. Can you please share your travel dates?

USER: My travelling dates are Apr 16 and Apr 18.

ASSISTANT: Please share your destination airport code.

USER: Sure, it is LAS.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: May I know your airline preference?

USER: I don't have airline preference.

ASSISTANT: Which class do you prefer for your journey?

USER: I am ok with any class.

ASSISTANT: Do you have any other requirements?

USER: Yes, I want to depart in the morning.

ASSISTANT: Let me know your name to proceed further.

USER: My name is Emily Jones.

ASSISTANT: Hawaiian airlines is having a flight with a ticket fare 100, shall I proceed with booking?

USER:    Yes, please.

ASSISTANT: Your ticket has been confirmed with the flight-1012 in economy class, which departs at 3:00.

USER: Thank you for the help.

ASSISTANT: Welcome, have a safe trip.