You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I assist you?

USER: Can you help me in booking a flight ticket from IAH to PHX?

ASSISTANT: Sure, May I know the travelling dates?

USER: I want to travel on 08/17, and return on 08/19.

ASSISTANT: Do you have any connection limit?

USER: I need a break in my journey.

ASSISTANT: Is there any other requirements?

USER: I prefer for normal cost airline.

ASSISTANT: May I know your name?

USER: I am Brenda Gonzalez.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Ok, no problem. Thanks for the information.

ASSISTANT: Thank you for opting us.