You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am planning to meet my colleague in Denver, so please book a flight ticket from DFW to DEN.

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travel dates?

USER: I will start on Mar 23, return on Mar 25.

ASSISTANT: Do you have any specification?

USER: I want a direct flight.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: We found a direct flight for you in economy class flight and it costs you 100. Can I proceed?

USER: Ok, proceed to booking.

ASSISTANT: To proceed further, may I know your name?

USER: My name is Justin Miller.

ASSISTANT: Your booking is done with flight 1009 in AA airlines.

USER: Thank you.

ASSISTANT: Thank you for reaching us, have a safe flight.