You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Mark White here.

ASSISTANT: how can I aid you?

USER: Can you please help me in booking a flight ticket from PHX to BOS?

ASSISTANT: Sure, can you provide me your travel dates?

USER: My travel dates are from Aug 28 to Aug 30.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: May I know about your class preference?

USER: I prefer economy class.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: Let me know your depart and arrival timings.

USER: I would like to return in morning.

ASSISTANT: Delta airlines is providing you the connecting flight which departs at 4 AM and arrives at 5 AM. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been reserved with flight-1028.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us, have a great day.