You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I am looking to book a flight ticket from HOU to DFW. Can you help me for that?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: My travelling dates are Jan 19 and Jan 21.

ASSISTANT: Ok, do you have any specifications?

USER: I prefer to book a single connecting flight.

ASSISTANT: We found a flight from Delta airline with 1009 flight number. Shall I proceed?

USER: Ok, proceed for booking.

ASSISTANT: Your ticket is booked with economy class and price is 100.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us. May I know your name?

USER: My name is Ronald Williams.

ASSISTANT: Thank you.