You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jacob Brown.

ASSISTANT: How can I assist you?

USER: Can you please aid me in making an airline reservation from PHX to LAS?

ASSISTANT: Sure, I am here to help you. Could you please provide your planned journey dates?

USER: My planned journey dates are Sept 2nd and Sept 4th.

ASSISTANT: Let me know your connection limit.

USER: I need a direct flight.

ASSISTANT: At what time you are planning to depart and arrive?

USER: The depart time should be evening.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Thank you for sharing the details. Unfortunately, there were no flights available that matches your requirements.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.