You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, welcome to UB agency. How can I help you?

USER: I am Mary Lee, searching to book a flight ticket to IAH from IAH. Can you check from 12/18 to 12/20?

ASSISTANT: Fine, please give me few seconds to check the flight availability.

USER: Ok.

ASSISTANT: Spirit airline is there for you to provide service on that route with flight-1028, ticket fare is 100 and there will be 1 connection. Shall I proceed for booking?

USER: Sure, you ca proceed.

ASSISTANT: I have booked your ticket successfully, have a safe flight.

USER: Thanks a lot.

ASSISTANT: Thank you for reaching us.