You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I be at your service today?

USER: I would like to book a ticket in well known airline. So, can you please help me with it ?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My trip dates are Sept 17 and Sept 19.

ASSISTANT: Please share me your source and destination codes.

USER: My airport codes are AUS and PHL.

ASSISTANT: Do you have any other specifications?

USER: I need a break in between the journey.

ASSISTANT: Please help me with your name for booking.

USER: Sure, my name is Barbara Wilson.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with your requirements.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for reaching us.