You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

USER: Please book a ticket from GA-ATL to NV-LAS. Can you help me with booking?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Could you please help me with your travelling dates?

USER: I will fly on 08/01 and return on 08/03.

ASSISTANT: Can I have your name please?

USER: I am David Scott.

ASSISTANT: There are no flights found on your requested dates.

USER: No problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your kind service.