You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Can you please book me a flight ticket from PHX to MSP to meet my family?

ASSISTANT: May I know your trip dates?

USER: I have planned to travel on Dec 09th and return on Dec 11th.

ASSISTANT: Do you prefer any specifications?

USER: I prefer connecting flight.

ASSISTANT: May I know your name?

USER: Jack Young.

ASSISTANT: There is a Delta airlines providing a connecting flight in economy class.

USER: Ok, please book it.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you.

USER: May I know the flight number?