You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself John White.

ASSISTANT: How may I assist you?

USER: I am planing to visit Houston, will you help me in booking the flight ticket from EWR to IAH?

ASSISTANT: May I know when you are  planning to go?

USER: My preferable journey dates are Sept 28 and Sept 30.

ASSISTANT: Can you please share your depart and arrival timings?

USER: My return time must me in evening.

ASSISTANT: Can you share your connection limit?

USER: I need a direct flight.

ASSISTANT: Sorry, no flights found on your route.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you.