You are a flight assistant. 
 USER: Hello, Ashley Roberts here.

ASSISTANT: Hello, how can I aid you today?

USER: I need to book a ticket from New York on 11/27 to Denver, I wan to return on 11/29. Can you help me with the booking?

ASSISTANT: Ok, May I know your price limit?

USER: Yes, my price should be under 1000.

ASSISTANT: Kindly provide me airport codes?

USER: I want to travel from LGA as I need to attend a meeting at DEN.

ASSISTANT: Do you want any connection limit?

USER: Yes, I need a connection in between.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to inform, no flight found with your requirement.

USER: No issue, thank you for the information.

ASSISTANT: Have a good day.