You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Nicholas Evans.

ASSISTANT: How may I assist you Evans?

USER: I want go Dallas next week, can you please book a flight ticket for me on 01/20?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Can you please provide your preferable airport codes for booking?

USER: I would like to take off from HOU and destination airport is DFW.

ASSISTANT: Is there any return trip that you are planning?

USER: Yes, please book my return ticket also on 01/22.

ASSISTANT: Please wait a moment to check the flights.

USER: Ok.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 200 is provided by AA airlines. Shall I proceed with this?

USER: Please book this flight ticket for me.

ASSISTANT: Ok, your ticket has been reserved in flight number 1021.

USER: Thank you for your help.

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