You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you at this moment?

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

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

USER: My trip dates are Apr 11 to 13.

ASSISTANT: Do you have any connection limit preference?

USER: I need a single connecting flight.

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

USER: Please ensure that my return time is afternoon.

ASSISTANT: May I know your name to proceed further?

USER: Justin Turner here.

ASSISTANT: Justin Turner, there are no flight services available on this route on your provided dates.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for contacting us.