You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I would like to book a ticket from  PHX to DTW, can you please help me out?

ASSISTANT: Sure, can you please share me your travelling dates?

USER: I am travelling on these dates April 21st and 23rd.

ASSISTANT: Do you have any connection limit?

USER: I need single connected flight.

ASSISTANT: Is there any other specifications in your journey?

USER: I don't have any other preferences.

ASSISTANT: May I know your name?

USER: Donna Walker here.

ASSISTANT: We found 1009 United Airlines with single connection and price of 100, shall I proceed with booking?

USER: Ok, you can proceed.

ASSISTANT: Your booking is done.

USER: Thank you for your services.

ASSISTANT: Thank you for reaching us.