You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Justin Lewis.

ASSISTANT: How  may I render you at this moment?

USER: I want to book a flight ticket within 200. Can you help me?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Could you please share your near by airport codes?

USER: CLT and IAH are my airport codes.

ASSISTANT: Do you need any halt in between the journey?

USER: I need a break.

ASSISTANT: Ok, when would you like me to book a flight ticket?

USER: 09/19 and 09/21 are my travelling dates.

ASSISTANT: Ok, please wait a while.

USER: Ok.

ASSISTANT: We found a direct flight, are you comfortable to travel?

USER: It's okay, I will try with this . You can reserve it for me.

ASSISTANT: Your ticket has been confirmed with 1007 Southwest airline with fare of 100.

USER: Thank you for your help.

ASSISTANT: Thank you for availing us.