You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Donald Parker.

ASSISTANT: How can I assist you at this moment?

USER: I want to travel from SEA to IAH. Can you help me to book a flight ticket?

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

USER: I want to travel in the flight on Nov 24 and Nov 26.

ASSISTANT: Do you have any connection limit preference?

USER: I am looking for a direct flight.

ASSISTANT: May I know your specific depart and arrival timings for this trip?

USER: I want to return in morning time.

ASSISTANT: Do you have any other specifications?

USER: No.

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

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for contacting us.