You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, How can I help you?

USER: I need to travel Houston.

ASSISTANT: Ok.

USER: Please book a flight from 11/26 to 11/28.

ASSISTANT: Sure, May I know the airport abbreviates?

USER: Ticket price limit is 5000 and connection limit is one. From TX-IAH to TX-HOU.

ASSISTANT: Sure, Wait for a while. There is a direct flight which matches your requirements. Should I proceed with booking?

USER: Please provide flight with one connection.

ASSISTANT: Ok,May I know your name?

USER: Melissa Brown.

ASSISTANT: Sorry to tell that there is no flight with 1 connection.

USER: Thanks for the assistance.

ASSISTANT: Thank you for approaching us.