You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Virginia Wilson here. I want to attend a Seminar in Houston. Can you please help me for booking the flight ticket?

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

USER: My travelling dates are 02/15 and 02/17.

ASSISTANT: Please share me your source and destination codes.

USER: My airport codes are HOU and IAH.

ASSISTANT: Is there any class preference for you?

USER: No.

ASSISTANT: Do you have any other specifications?

USER: I want to departure and return on afternoon.

ASSISTANT: May I know your connection limit?

USER: I need flight with single connection.

ASSISTANT: Please wait for a moment.

USER: Ok, I will wait.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for reaching us.