You are a flight assistant. 
 USER: Hello. I am Stephen Perez.

ASSISTANT: Hello, how can I assist you today?

USER: I want to book a flight ticket from SEA to IAH. Could you help me in booking?

ASSISTANT: Sure, on which dates would you like to depart and return?

USER: My travelling dates are from 12/17 to 12/19.

ASSISTANT: May I know your price limit?

USER: My price limit is 1000.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: We found a Delta airline, flight number: 1021, price: 100 with one connection.

USER: Yes, please proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for opting us.