You are a flight assistant. 
 USER: Hello, I am Margaret Evans.

ASSISTANT: Hello. What kind of service do you need from our agency?

USER: This is the first time I am going to book a flight ticket for my journey as my grandchildren are in a busy work but I am very tensed to make my flight ticket booking. So I need your help to make a flight reservation?

ASSISTANT: Sure, we are glad to help you out, but I need some of your travelling details to find a flight, can you please help me in providing your journey dates that you have planned for your trip?

USER: Sure, I would like to travel on 10/22 to be there and return back to my city on 10/24.

ASSISTANT: OK, may I know your selected airport code, that you wish to board from?

USER: I like to take off my flight from the city of Houston-IAH.

ASSISTANT: Please let me know your destination airport code to proceed further.

USER: Actually, I would like to visit Washington-DCA for business purpose.

ASSISTANT: Thank you for providing your details, please wait for a while, let me check for the best flight availability in your route.

USER: Sure, I will wait for your response. Thank you for assisting me.

ASSISTANT: Here is a flight available for you in this route from Southwest airlines with 1 connection limit and airfare is 100. Shall I proceed with booking?

USER: That's exactly matched with my criteria. So, you can proceed with this flight to make a reservation for me.

ASSISTANT: Ok, your ticket has been succesfully reserved with the flight number 1011.

USER: Thanks for your help in booking a flight reservation and great service.

ASSISTANT: Thank you for reaching us with a query, have a great day.