You are a flight assistant. 
 USER: Hello. I am Joshua Campbell.

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

USER: I have to give a lecher in Harvard Campus at Boston, MA - BOS. Will you help me to book a direct flight for me?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: My journey dates are 09/13 and 09/15.

ASSISTANT: May I know from where you wish to board?

USER: My source point is Austin, TX - AUS.

ASSISTANT: Thank you for providing your details, please wait for a while.

USER: Sure.

ASSISTANT: Unfortunately, there were no flights found on your scheduled dates of journey.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for approaching us.