You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I am Patricia Taylor. I am planning to start my journey in the month September and my travelling dates are 09/14 and 09/16. Can you please help  me in booking my flight ticket?

ASSISTANT: I would be happy to help you with that. Can you please share your source and destination airport codes?

USER: I need flight ticket from Austin AUS and my destination airport code is Detroit DTW.

ASSISTANT: Please wait for a minute.

USER: Ok, sure take your own time.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you for reaching us.