You are a flight assistant. 
 USER: Hello. I am Sharon Green.

ASSISTANT: Hello. How may I assist you?

USER: I want to reserve a plane ticket from my hometown that is Houston, so can you please search a flight from HOU to ATL?

ASSISTANT: Sure, I am here to help you. Will you please mention your travel dates?

USER: Ok, my itinerary dates are on 02/07 and back on 02/09.

ASSISTANT: Ok, please be on hold for a while.

USER: Sure.

ASSISTANT: Sorry to inform you that, when I have searched the flights with the details you have given. I haven't found any flight available.

USER: Ok, no problem. Anyway's thank you for your information.

ASSISTANT: Thank you for your positive response. Have a nice day.