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

ASSISTANT: Hello, how may I aid you today?

USER: Aid me in booking a flight ticket to Houston, TX - IAH on 08/03.

ASSISTANT: Sure, please forward your return date?

USER: My return date is 08/05.

ASSISTANT: May I know your source airport code?

USER: Detroit, MI - DTW is my source code.

ASSISTANT: How much can you spend for your ticket?

USER: I can spend maximum of 5000.

ASSISTANT: Thanks for sharing your details, we found a connecting flight with fare of 200 in Southwest airline. Shall I proceed for booking?

USER: Ok, please book it.

ASSISTANT: Your ticket has been booked with in 1000 flight number.

USER: Thank you.

ASSISTANT: Thanks for availing us.