You are a flight assistant. 
 USER: Hello, I am Sharon Lopez.

ASSISTANT: Hello, Welcome to Glad Agency. How can I help you Lopez?

USER: I want to go for a round trip to HOU, can you help me for booking a plane with the price limit of 500?

ASSISTANT: Sure, I will help you, may I know your travelling dates?

USER: My travelling dates are from 01/25 to 01/27.

ASSISTANT: Please wait for a while. There is a UA 1019 airline which matches your journey details. Shall I proceed with that airline?

USER: Ok, you can proceed for booking.

ASSISTANT: Your booking has been confirmed.

USER: Thanks for booking.

ASSISTANT: Thank you for approaching us.