You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Patricia Young. Can you help me in booking a ticket with 1 connection?

ASSISTANT: Sure, may I know the travelling dates?

USER: I would like to go to Desert Botanical Garden, Phoenix. My journey dates are from 10/18 to 10/20.

ASSISTANT: Help me with the journey airport codes.

USER: My airport codes are from IAD to PHX.

ASSISTANT: Do you have any price limit?

USER: No.

ASSISTANT: There is a flight with number 1021 and airline is Southwest.

USER: Excellent, reserve my seat.

ASSISTANT: Your ticket is booked, have a safe flight.

USER: Thank you.