You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am planning for a round trip at Atlanta, ATL with my friends. Can you help me to book a ticket?

ASSISTANT: Sure, may I know your trip dates?

USER: My journey dates are Apr 18th and Apr 20th.

ASSISTANT: Can I know your name?

USER: Robert Hernandez here.

ASSISTANT: Do you need any other specifications?

USER: Price should not cross 1000.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Thank you for waiting. There is no flight found on your given name.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for choosing us.