You are a flight assistant. 
 USER: Hello, I am Margaret Allen.

ASSISTANT: Hello, how can I serve you today?

USER: I would like to fly from Denver to Orlando, can you please book me a ticket?

ASSISTANT: Sure, I will help you with booking. Can you please provide your journey dates?

USER: My journey dates are from 06/25 to 06/27.

ASSISTANT: Can you please let me know your airport codes?

USER: My preferable airport codes are from DEN to MCO.

ASSISTANT: May I know your price limit?

USER: Please make sure the price limit should not exceed 200.

ASSISTANT: Ok, please hold on. I will get back to you.

USER: Ok.

ASSISTANT: Thanks for your patience. We found a direct flight with your given details.

USER: Ok, don't proceed for booking.

ASSISTANT: Thank you for contacting us.

USER: Thank you.