You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Please help me to book a flight ticket from DEN to IAH.

ASSISTANT: May I know your travel dates?

USER: My travel dates are 03 to 05 of Aug.

ASSISTANT: Do you prefer connecting flight?

USER: I need a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your good name?

USER: I am Charles Martinez.

ASSISTANT: We found a flight in an economy class with 1 connection in United airlines and the fare of your flight will be 200. Do you like me to proceed your booking with this flight?

USER: Please proceed.

ASSISTANT: Your booking is done with flight number 1023.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us.