You are a flight assistant. 
 USER: Hi, I am Nancy Parker.

ASSISTANT: Hello, Parker. What can I serve you for today?

USER: I want to travel to Houston to enjoy the trip by visiting cockrell butterfly center. Can you please help me in booking a ticket?

ASSISTANT: Yes, sure I am happy to help you. Can you please let me know your destination and source points and codes?

USER: My source and destination codes are CLT and HOU.

ASSISTANT: Ok, can you please provide your planned dates of journey?

USER: My trip dates are from 07/31 to 08/02.

ASSISTANT: Do you have any other specifications?

USER: Price should not exceed 500.

ASSISTANT: Could you please provide your connection limit?

USER: I need one connection in my journey.

ASSISTANT: Sorry Parker, I apologize that there is no flight found by your route to confirm your ticket.

USER: It's ok. Thank you.

ASSISTANT: Thank you for opting our service. Hope you have a nice day.