You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Myself Dennis Hernandez. I need to schedule my trip to visit Houston this weekend. Can you please help me in reserving the ticket from BOS to IAH?

ASSISTANT: Sure, may I know your travel dates please?

USER: I am planning my trip on Sept 14, and again I will return back on Sept 16.

ASSISTANT: Do you have any connection limit?

USER: I am flexible with single connection.

ASSISTANT: May I know your airline preference?

USER: I am comfort with any airlines.

ASSISTANT: Which class do you prefer to travel?

USER: I am flexible with any class.

ASSISTANT: Do you have any specific departure and return time?

USER: My depart time is afternoon.

ASSISTANT: Sorry, there are no flights in this route as per your travel details.

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

ASSISTANT: Thank you for choosing us.

USER: You are welcome.