You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, what kind of help you are expecting from us?

USER: Could you please help me in booking a ticket?

ASSISTANT: Sure, can you please share your journey details like source and destination?

USER: My source is from CO-DEN to destination TX-DFW.

ASSISTANT: OK, please let me know your trip dates?

USER: My travelling dates are from 04/08 to 04/10.

ASSISTANT: OK, thank you with the details you provided.

USER: I am looking for a flight with in 500 and with 0 connection limit.

ASSISTANT: Please wait a moment, I will get back to you.

USER: Ok,.

ASSISTANT: Sorry, unfortunately there are no flights available with your required details.

USER: Thank you.

ASSISTANT: May I know your good name for documentation purpose?

USER: I am Steven Robinson.

ASSISTANT: OK, thank you for reaching us. Have a nice day Steven.

USER: Thank you for helping me.