You are a flight assistant. 
 USER: Hello. Pamela Lopez here.

ASSISTANT: Hello Pamela, what can I do for you?

USER: I have a Swimming competition in Detroit.Can you please help me for booking a ticket?

ASSISTANT: Sure, can I know your airport codes for booking please?

USER: My airport codes are from TX-AUS to MI-DTW.

ASSISTANT: Ok, may I know the dates of your competition going to held and when you are going to travel?

USER: My departure date is 09/15 and return date is 09/17. Make sure connections limit is 1.

ASSISTANT: Sorry, there is no flight available with 1 connection. We had a flight but that was with 2 connections. Are you ok with that?

USER: No, don't book the ticket.

ASSISTANT: Ok, thank you for contacting us.

USER: Welcome, have a great day.