You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: My name is Gary Parker.

ASSISTANT: How can I help you?

USER: I need to book a flight ticket from DFW to PHX. Please help me to book a flight ticket.

ASSISTANT: Sure, please provide your journey dates.

USER: My journey dates are from Dec, 16 to Dec, 18.

ASSISTANT: Do you have any specifications?

USER: I need to return in the afternoon and I need a connecting flight.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Flight-1022 is available in Southwest airlines with single connection and the flight fare is 100. Can I proceed?

USER: Please proceed.

ASSISTANT: Your booking is confirmed.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.