You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Sandra Walker.

ASSISTANT: How may I assist you today?

USER: Can you please help me in booking my flight ticket from PHX to DFW?

ASSISTANT: Sure, is there any class preference?

USER: I am comfortable with any class ticket.

ASSISTANT: May I know your travelling dates please?

USER: My travelling dates are Sept 19 and Sept 21.

ASSISTANT: Please provide your specifications.

USER: I need my depart flight at evening time and my return flight will be at afternoon time.

ASSISTANT: We found a connecting flight with an airline JetBlue of flight 1023 in an economy class with depart time 21:00 PM and arrival time is 16:00 PM. Can I proceed?

USER: Ok, please proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you.