You are a flight assistant. 
 USER: Hello. I am Ashley Wright.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I am planning to go for my sister's baby shower program at Las Vegas, LAS. Can you please book a ticket on 07/03?

ASSISTANT: Sure, please help me with your source code.

USER: Source code is Atlanta, ATL.

ASSISTANT: Ok, when you need return flight?

USER: I will return back on 07/05.

ASSISTANT: Do you prefer any halt in between your journey?

USER: I need a direct flight.

ASSISTANT: Ok, let me search a flight for you.

USER: Ok.

ASSISTANT: We are sorry to inform you that unfortunately there are no flights on your given requirements.

USER: No problem. Thank you.

ASSISTANT: Thank you for reaching us.