You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Myself Joshua Hernandez. I am looking for a flight from IAH to DFW, can you help me in booking?

ASSISTANT: Sure, kindly mention your travel dates.

USER: Sure, my planned travel dates are July 29 and July 31.

ASSISTANT: Do you have any class preference?

USER: No, I am not looking for the any class preferences.

ASSISTANT: May I know your connection limit?

USER: Yes, I would like to start my journey for the afternoon flight with 1 connection.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: Please wait a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, there is no flight services available on your required dates.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for opting us.