You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a ticket from PHL to DFW. Could you book a ticket?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Travel dates are Jan, 19 and Jan, 21.

ASSISTANT: May I know your connection limit?

USER: I prefer connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I prefer to fly in a normal-cost airlines.

ASSISTANT: May I know your good name?

USER: My name is Angela Baker.

ASSISTANT: We found an airline: United Airlines, flight number: 1002 and price is 200 with one connection.

USER: Please book a flight.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for reaching us.