You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Nicole Brown. I want to book a flight ticket from DFW to PHX. Could you help me in booking?

ASSISTANT: On which dates are you going to travel?

USER: My travelling dates are from Mar 18-20.

ASSISTANT: Could you share your depart and return timing?

USER: My depart time should be in the evening.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Wait a minute.

USER: Ok.

ASSISTANT: There is a flight on United airline, flight number 1002 and depart time is 20:00PM. Can I book it?

USER: Yes, please book it.

ASSISTANT: Your ticket has been booked.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us.