You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am planning to visit a historical place at Houston, please help me with booking a flight ticket with price under 200.

ASSISTANT: Sure, can I know your dates of journey please?

USER: Sure, I will go on 04/17 and return back on 04/19.

ASSISTANT: May I know your airport codes please?

USER: Sure, it's from ATL to HOU.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a single connected flight.

ASSISTANT: Can you please provide your name?

USER: I am Katherine King.

ASSISTANT: Please wait for a while, I will check and get back to you.

USER: Sure, take your time.

ASSISTANT: There is no flight found on your given details.

USER: Ok, not an issue. Thank you for your time.

ASSISTANT: Thanks for choosing us.