You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Samantha Thomas.

ASSISTANT: How can I aid you?

USER: I need to attend a workshop at Las Vegas,can you help me to book a flight ticket from PHL to LAS?

ASSISTANT: Sure, May I know your preferable dates of journey?

USER: I am travelling from June 6 to June 8.

ASSISTANT: Ok, do you prefer any halt in between journey?

USER: No, I need a direct flight.

ASSISTANT: Thanks for providing details, we are unable to provide flights on your journey routes due to bad weather conditions.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for choosing us.