You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Ruth Miller here.

ASSISTANT: Miller, how may I assist you?

USER: I would like to travel SEA for attending client meeting over there. Please, assist me to book a flight ticket from ORD.

ASSISTANT: Sure, I will help you. Please provide me your trip dates.

USER: Ok, my itinerary dates are from 01/17 to 01/19.

ASSISTANT: Flight-1020 is available with Spirit airlines and the ticket fare is 100 only. Can I book the ticket for you?

USER: That's fine, please proceed for booking.

ASSISTANT: Miller, your ticket is booked successfully.

USER: Thank you for helping me.

ASSISTANT: You are welcome and thank you for choosing us.