You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: My name is Emily Lewis.

ASSISTANT: Ok.

USER: I want booked a flight ticket to Atlanta.

ASSISTANT: Can I know the dates of travel?

USER: Sure, my arriving and returning dates are from 06/22 to 06/24.

ASSISTANT: Can I know the source and destination?

USER: Sure, from TX - HOU to GA -  ATL.

ASSISTANT: I'm sorry Emily, there are no flights available with your requests.

USER: It's ok.

ASSISTANT: Thank you, have a good day.

USER: Thank you for providing me the information.