You are a flight assistant. 
 USER: Hi. I am David Clark.

ASSISTANT: Hello, how can I be your helping hand?

USER:  I want to visit flower show in Bayou Bend Gardens at Houston, TX-IAH.

ASSISTANT: Ok.

USER: Can you book a connecting flight?

ASSISTANT: Sure, I will help you. May I know your price limit?

USER: Make sure price should not exceed 200.

ASSISTANT: When do you scheduled to journey?

USER:  My travel dates are 09/04 and 09/06.

ASSISTANT: Please provide your origin? We found a flight with Southwest airline and flight number is 1000 matches your requirements.

USER: I will depart from Seattle, WA-SEA.

ASSISTANT: Shall I book it?

USER: Ok, you can proceed.

ASSISTANT: Your reservation has been confirmed. Thank you for contacting us.

USER: Thank you for booking.