You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I am Justin Mitchell here, I want to reserve my ticket from PHX to DTW, can you please help me out?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: Ok, my planned dates of journey are from Jun, 15 to Jun, 17.

ASSISTANT: Do you have any other requirements?

USER: Yes, I need a depart time which is at morning.

ASSISTANT: There is a connected flight in Spirit airlines with the fare 200.

USER: Ok, you can book it.

ASSISTANT: Your booking is done.

USER: Thank you for your service in booking.

ASSISTANT: Thank you.