You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Help me in booking a flight from HOU to DFW?

ASSISTANT: Sure, I am here to help you. Please let me know your travelling dates.

USER: My travelling dates are May 08 to 10.

ASSISTANT: Do you prefer any break in between journey?

USER: I need direct flight.

ASSISTANT: Are there any other specifications for you?

USER: No.

ASSISTANT: May I know your good name?

USER: I am Christopher Moore.

ASSISTANT: Sorry, no flights are available on your journey routes.

USER: That's ok, thank you.

ASSISTANT: Thank you for availing us.