You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Katherine Wright here.

ASSISTANT: What service that you are seeking from our agency Wright.

USER: I want to travel from Dallas to Houston for attending a seminar. Can you please help me for booking the flight ticket?

ASSISTANT: Ok, I am glad to help you with that. Can you please provide your planned dates of travelling?

USER: My travelling dates are from 01/11 to 01/13.

ASSISTANT: Ok, may I know your origin and destination airport codes for booking?

USER: My airport codes are from DFW to IAH.

ASSISTANT: Please wait a moment to check the flights availability.

USER: Ok, I will wait.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 100 is provided by UA airlines. Shall I proceed with this?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Ok, your ticket has been booked in flight number 1000.

USER: Thanks for helping me.

ASSISTANT: Thank you for reaching us, have a great journey.