You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: Can you help me to book flight ticket from PHX to DEN?

ASSISTANT: Sure, may I know your planned trip dates?

USER: My trip dates are May 3 and May 5.

ASSISTANT: Do you have any connection limit preference?

USER: I prefer a connecting flight.

ASSISTANT: Do you have any other preferences?

USER: I prefer a economy class which departs in the afternoon.

ASSISTANT: Could you help me with your name please?

USER: Sandra Campbell here.

ASSISTANT: I found a connecting flight with Delta Airlines and the airfare is about 100. Shall I proceed with flight 1001?

USER: Proceed for booking.

ASSISTANT: For a economy class your ticket is booked.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.