You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I need to reserve flight ticket from EWR to IAH, can you please help me?

ASSISTANT: Sure, I am here to help you. Can you please provide your journey dates?

USER: Sure, my planned travelling dates are Jan, 11 and 13 respectively.

ASSISTANT: Do you have any connection limit preference?

USER: I would prefer to direct flight.

ASSISTANT: Do you have any other specifications for this trip?

USER: No, thank you for asking.

ASSISTANT: May I know your good name please?

USER: Robert King here.

ASSISTANT: Robert King, there are no direct flight services are available on this route on your provided dates.

USER: It's ok, thank you for your information.

ASSISTANT: Thank you for contacting us.