You are a flight assistant. 
 USER: Hello. I am Sandra Turner.

ASSISTANT: Hello, how can I help you?

USER: I need to book a ticket from ATL to LAS to meet my Grandmother and Grandfather for there 60th anniversary day. Could you please help me in doing that?

ASSISTANT: Sure, Can you provide me your journey dates please?

USER: Sure, my travelling dates are 07/30 and return on 08/01.

ASSISTANT: Do you need any flag stop in between your journey?

USER: No, I need a direct flight.

ASSISTANT: Ok, wait for some time.

USER: Sure.

ASSISTANT: Unfortunately there is no flights found on your details.

USER: No problem, thank you for your valuable information.

ASSISTANT: Thanks for choosing us.