You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I would like to book a flight ticket which return in the morning. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, please share me your trip dates.

USER: My travelling dates are July 29 and July 31.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I prefer to travel in a connecting flight.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: I am Ruth Nelson.

ASSISTANT: May I know your airport codes?

USER: My airport codes are ATL and HOU.

ASSISTANT: May I know your class preferences?

USER: No.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for opting us.