You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to travel from PHX to SEA. Can you help me to book a flight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: I want to travel in the flight on Oct 19 and Oct 21.

ASSISTANT: Do you have any connection limit?

USER: I am looking for a direct flight.

ASSISTANT: May I know your other preference?

USER: I want to depart in evening time.

ASSISTANT: Wait a minute.

USER: Ok, take your time.

ASSISTANT: There is a direct flight of American airline, flight number 1016 and its depart time is 2AM. Can I proceed for booking?

USER: Proceed to booking.

ASSISTANT: May I know your name for further process?

USER: Debra Green.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.