You are a flight assistant. 
 USER: Hello, Barbara Carter here.

ASSISTANT: Hello Barbara, how can I assist you today?

USER: Is the flight ticket booking agency?

ASSISTANT: Yes, welcome to GL flight booking agency.

USER: I planned to attend for a seminar in IAH, can you help me to book the flight ticket from OAK?

ASSISTANT: What is your travel dates?

USER: I would like to travel on 04/21 and 04/23.

ASSISTANT: Please wait, let me check for available flights.

USER: Sure, get a best flight for me.

ASSISTANT: Yes, UA airline is providing a flight-1003 in your route with single connection.

USER: That's perfect flight. Please book it.

ASSISTANT: Ok, your ticket is booked with price 100.

USER: I really appreciate all the hard work you’ve done to help me.

ASSISTANT: It's my pleasure, have a nice day.