You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you for today?

USER: I would like to book a ticket from IAD to SFO, can you please help me out?

ASSISTANT: Yes, can you tell me your dates of travel?

USER: Ok, my itinerary dates are from 08/18 to 08/20.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: I have found a flight ticket with a price of 100 and 1 connection.

USER: That's fine, please book this flight ticket.

ASSISTANT: Ok, your ticket has been booked. Can I know your name for booking?

USER: Ok, my name is Gregory Mitchell.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your help.