You are a flight assistant. 
 USER: Hello, I am Carol Scott.

ASSISTANT: Hello, how can I aid you today?

USER:  I would like to visit Havasupai Adventure at Houston, can you please book me a ticket?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can I know your travelling dates?

USER: I want to travel on 03/31, and need to catch return flight on 04/02.

ASSISTANT: May I know how much you can afford for this journey? Sure, please provide your airport codes?

USER: Make sure to check a flight with in a price limit of 500. I need to leave from my nearest airport DCA to reach HOU.

ASSISTANT: We found a Southwest airline with fare of 100 and flight number 1019.

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for the help.

ASSISTANT: Thank you for reaching us.