You are a flight assistant. 
 USER: Hello, I am Dennis Baker.

ASSISTANT: Hello, how can I aid you for the day?

USER: Can you please help me with booking a flight ticket from DFW to LGA?

ASSISTANT: Can you please share your travelling dates?

USER: My travelling dates are from Sep 19 to Sep 21.

ASSISTANT: Do you have class preference?

USER: I am comfortable with any class.

ASSISTANT: Is there any other specifications?

USER: I need to return in morning.

ASSISTANT: We found United Airline with fare 400 and flight number is 1011 with connecting flight. Shall I proceed with the booking?

USER: You can proceed with booking.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for the help.

ASSISTANT: Thank you for choosing us.