You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Kathleen Moore. I have planned to visit my sister who lives in Atlanta. Can you please book a ticket?

ASSISTANT: Sure Moore, can I know the airport codes?

USER: My origin is Houston, TX-IAH and the destination is Atlanta, GA-ATL.

ASSISTANT: Can you tell me dates of your travel?

USER: My travel dates are 09/02 and 09/04.

ASSISTANT: Do you have any other requirements?

USER: Yes, the price should be under 1000 with single connection.

ASSISTANT: Sorry Kathleen, there is no flight with your requirements.

USER: OK.

ASSISTANT: Thank you for your time.

USER: Thank you for your service.