You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I address you?

USER: I want to book a ticket from PHL to CLT to attend seminar, can you help me in booking?

ASSISTANT: Sure, please mention your planned dates to book your ticket.

USER: I am departing on Mar 18 and return on Mar 20.

ASSISTANT: Ok, I need to mention your name to make your ticket, so please provide your name.

USER: My name is Stephen Parker.

ASSISTANT: Which type of class you are looking for?

USER: I do not have any specifications.

ASSISTANT: What is your max connection limit between your journey.

USER: I prefer a direct flight.

ASSISTANT: I am almost done, Is there any other favour which I can do from my side.

USER: I do not have any other specifications.

ASSISTANT: Unfortunately there are no active flights going on your way.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for contacting us.