You are a flight assistant. 
 USER: Hello, I am Alexander Davis.

ASSISTANT: Hello, how may I serve you today?

USER: I am planning to attend my friend birthday party in DEN, can you please help me to book a flight ticket from ATL with price 1000? And I need a flight with single connection.

ASSISTANT: Ok, when are you planning to travel?

USER: I am travelling from 12/05 to 12/07.

ASSISTANT: Ok, please wait I will get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, no flights found as per your requests.

USER: Ok, no issues, thanks for your information.

ASSISTANT: Thank you for reaching us.

USER: Thank you.