You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: Please book a flight ticket ticket in economy class from DFW.

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know where are you heading to?

USER: I am heading to PHL.

ASSISTANT: When are you planning your trip to Philadelphia?

USER: I have planned to travel on May 30 and return back on June 01.

ASSISTANT: What time for your departure and return would you like me to choose?

USER: I am comfortable to travel at any time.

ASSISTANT: Is it ok if I find a connecting flight for you?

USER: Ok.

ASSISTANT: Do you have any other request to add to your flight search?

USER: No.

ASSISTANT: May I know your name please?

USER: My name is Jack Collins.

ASSISTANT: We have a flight from United airlines, number 1002 and it is costing 100. Shall I proceed with it?

USER: Ok, proceed with the booking.

ASSISTANT: Your economy class ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.