You are a flight assistant. 
 USER: Hello, I am Frank Moore.

ASSISTANT: Hello, how may I help you today?

USER: I would like to travel from DFW to IAH. Can you please help me to book a ticket?

ASSISTANT: Sure, when would you like to depart and return?

USER: My travelling dates will be on 05/11 to 05/13.

ASSISTANT: Ok, how much you can afford for flight ticket?

USER: I can spend 500.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: We found a Southwest airline, flight number: 1017, price: 100 with one connection.

USER: You can proceed to booking.

ASSISTANT: Your flight ticket has been confirmed in economy class.

USER: Thank you.

ASSISTANT: Thank you for opting us.