You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Can you please book a flight ticket from HOU to DFW?

ASSISTANT: Sure, kindly share your travel dates.

USER: My travelling dates are Apr 12 and 14.

ASSISTANT: Do you have any connection limit?

USER:     Yes, I need a connection in between the journey.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: My name is Stephen Roberts.

ASSISTANT: Ok, please wait a moment.

USER: Ok, take your time.

ASSISTANT: Sorry to say, no flights found with your requirement.

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

ASSISTANT: Thanks for reaching us.