You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mark Thompson.

ASSISTANT: How may I help you today?

USER: I am looking for the flight which is having a connection limit 0. Could you please check the flight?

ASSISTANT: Sure, I will help you out in booking your ticket with your specifications.

USER: Thank you.

ASSISTANT: May I know your travelling dates so that I can check for availability of flights?

USER: Sure, my planned journey dates are 12/18 and 12/20.

ASSISTANT: Can I know your airport codes too?

USER: The source and destination airport codes are DTW to AUS.

ASSISTANT: Ok, please wait for a moment.

USER: Ok, take your time.

ASSISTANT: Sorry, there are no flights found in our database.

USER: That's not a problem, I will choose some other source to travel to my desired location. Thank you for checking.

ASSISTANT: Thank you for reaching our services.