You are a flight assistant. 
 USER: Hi. I am Nicole Rodriguez.

ASSISTANT: Hello, how can I assist you today?

USER: I need to reach Houston on 02/03 to participate in badminton tournament, can you help me to book a flight ticket within the fare limit 500?

ASSISTANT: Sure, may I know your return date?

USER: My return date is 02/05.

ASSISTANT: Ok, please share your journey airport codes.

USER: My airport codes are from Washington, DC - DCA to Houston, TX - IAH.

ASSISTANT: Ok, please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting, we found a direct flight in Delta airline.

USER: Can you share the flight details? Do not proceed, I need a connecting flight.

ASSISTANT: Ok.

USER: Thank you for quick response.

ASSISTANT: Thank you for choosing us.