You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Benjamin King.

ASSISTANT: King, how can I assist you today?

USER:  I am planning to reserve a plane ticket from LAS to PHL, can you please help me out?

ASSISTANT: Sure, can you please tell me your trip dates?

USER: Sure, my travelling dates are from 06/02 to 06/04.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Sorry King, there are no flights available on your preferred dates.

USER: No problem, thank you.

ASSISTANT: Thank you for contacting us and have a nice day.