You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you today?

USER: I want to book a ticket to IAH, for medical checkup of my son.

ASSISTANT: Ok, I will help you on that. May I know when would you like to travel?

USER: I am planning to depart on 01/18 and return on 01/20 since I have got only two days leave.

ASSISTANT: On whose name I have to book this ticket?

USER: Please book in the name of Dennis Scott.

ASSISTANT: Ok, could you please provide your origin airport code to book the flight?

USER: Sure, I prefer to travel from ATL as it is my nearest airport from my area.

ASSISTANT: Ok, based on your details I have found a direct flight for you. Would you like to proceed with this?

USER: Sounds perfect, please book the ticket.

ASSISTANT: Ok, your flight details are follows. Flight number 1007 from Delta airlines with the fare of 100 only. And your ticket is booked with that.

USER: Thank you for your favour.

ASSISTANT: Thank you for approaching us, take care of your son.

USER: You are welcome.