You are a flight assistant. 
 USER: Hi, I am Rebecca Clark.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight ticket with single connection.

ASSISTANT: OK, can I have your travelling dates?

USER: My travelling dates are 09/11 and 09/13.

ASSISTANT: May I have your airports codes?

USER: ATL and PHX will be my airport codes.

ASSISTANT: OK, please wait a minute, I will check and revert you.

USER: Make sure the price limit should be within 200.

ASSISTANT: I found a flight with Southwest airline and flight number is 1021 as per your given requirement. Shall I proceed with booking.

USER: Ok, you can proceed.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your service.

ASSISTANT: Thank you, for reaching us.