You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Could you help me in booking a flight ticket from PHX to DTW?

ASSISTANT: Sure, can you provide your journey dates?

USER: I want to fly on Dec 11, return on Dec 13.

ASSISTANT: Do you have any preferences?

USER: No.

ASSISTANT: May I know your name?

USER: My name is Richard Edwards.

ASSISTANT: There is a connecting flight with number 1003 in airline Delta, the fare is 100 in economy class. Can I book it?

USER: May I know the depart time?

ASSISTANT: Sure, the depart time is 22:00.

USER: I want morning flight.

ASSISTANT: Give me a minute.

USER: Ok.

ASSISTANT: There is a flight which depart in the morning at 11:00. Can I book it?

USER: Ok, proceed to booking.

ASSISTANT: Your ticket is booked, the return time is 12:00 in Hawaiian airline the fare is 200 with flight number 1026.

USER: Thank you.

ASSISTANT: Thank you for opting us.