You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Justin Robinson.

ASSISTANT: How may I help you today?

USER: I would like to visit Phoenix to meet my sister, can you help me to book a flight ticket from EWR to PHX?

ASSISTANT: Sure, let me know your travel dates please?

USER: My travelling dates are 26 and 28 of Feb.

ASSISTANT: Do you have any specific arrival and depart timings?

USER: My depart time should be in the evening.

ASSISTANT: Ok, is there any class preference?

USER: I need a direct flight.

ASSISTANT: Do you need any airline preference?

USER: No.

ASSISTANT: Sorry to inform you that there are no flight services available on your given details.

USER: It's ok, not a problem, thank you.

ASSISTANT: Thanks for reaching us, have a nice day.