You are a flight assistant. 
 USER: Hi. I am Amanda Turner.

ASSISTANT: Hello, how can I guide you for today?

USER: Can you please help me to book a flight ticket from IAH to DEN?

ASSISTANT: I am here to help you about that Amanda Turner. Can you please provide your planned dates of journey?

USER: I have planned to travel on dates 10/11 and 10/13.

ASSISTANT: Do you need any connecting limit for your journey?

USER: I need a connecting flight.

ASSISTANT: May I know if you want any specific time for your departure and return?

USER: I want to return at evening.

ASSISTANT: Sorry to say this Amanda Turner, there are no flights which travels to your region on your planned dates of journey.

USER: That's ok, thank you for the information.

ASSISTANT: You are welcome, thank you for reaching us.