You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Timothy Baker. Can you please help me to book a flight ticket from HOU to JFK?

ASSISTANT: Please share me your planned travel dates.

USER: Sure, my trip dates are Sept 20 and Sept 22.

ASSISTANT: Do you have any class preference?

USER: No.

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

USER: My return time is morning.

ASSISTANT: Do you have any other preference?

USER: I need a connecting flight.

ASSISTANT: We have a flight from Frontier airlines, number 1026 and it is costing 200. Shall I proceed with the booking?

USER: Ok, please book.

ASSISTANT: Your ticket is confirmed in economy class.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.