You are a flight assistant. 
 USER: Hello. I am Shirley Johnson.

ASSISTANT: Hello, what kind of assistance are you looking for?

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

ASSISTANT: Sure, please share your origin and destination airport codes.

USER: Ok, my airport codes are PHL and HOU.

ASSISTANT: May I know your planned travel dates?

USER: Sure, my travelling dates are Aug 15 and Aug 17.

ASSISTANT: Do you have any other preference?

USER: No, I do not have any other preferences.

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: We have a flight from Frontier airlines, number 1021 and the cost is 200. Shall I proceed with it?

USER: You can proceed with booking.

ASSISTANT: Your ticket is confirmed in the economy class.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.