You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: My name is Pamela Mitchell.

ASSISTANT: How can I assist you today?

USER: I am planning to attend my college event at ATL to  LAS.

ASSISTANT: Sure, will you provide your travelling dates?

USER: The dates are from 12/29 to 12/31. And I want a direct flight.

ASSISTANT: Unfortunately, there is no flights found under your details.

USER: That's fine, thank you for your help.

ASSISTANT: Thank you for reaching us.Have a great day.

USER: You are welcome.