You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Myself Ronald Walker. I need to schedule my trip to travel Houston to meet my colleagues. Can you please help me in reserving the ticket from SEA to IAH?

ASSISTANT: Sure, let me know your travelling dates.

USER: I am planning my trip on Aug 29, and again I will return back on Aug 31.

ASSISTANT: Can you please share your connection limit?

USER: I am flexible with single connection.

ASSISTANT: May I know your depart time and return time?

USER: My return time is evening.

ASSISTANT: Do you have any other requirements?

USER: No, I don't have any other preference?

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Not a big issue, anyhow thank you very much for your service.

ASSISTANT: Thank you for opting us.