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

ASSISTANT: Hello, What can I do for you?

USER: I want to book a flight ticket with direct flight?

ASSISTANT: Sure, I will help you with booking a ticket, Please let me know your travelling details?

USER: My airport codes are from SFO  to DEN.

ASSISTANT: Ok, Can I know your travelling dates?

USER: Dates are from 11/06 to 11/08. price limit is 1000.

ASSISTANT: Sure, Please wait for few minutes.

USER: Sure.

ASSISTANT: Thank you for waiting, We are pleased to inform there is 1001 Spirit airline with price 200. Shall I proceed with booking?

USER: Ok, You can proceed.

ASSISTANT: Your ticket has been reserved. Thank you for opting us, Have a good day.

USER: Thank you.