You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Can I know your concern to assist you?

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

ASSISTANT: Ok, please can I know your name to book a ticket?

USER: My name is Paul Anderson.

ASSISTANT: Ok, please can I know your dates of journey?

USER:  I am departing on July 28 and return on July 30.

ASSISTANT: Ok, please can I know your specifications?

USER: I prefer a direct flight.

ASSISTANT: Can I know your other intents?

USER: I do not have any other specifications.

ASSISTANT: Sorry, there are no flights available at your location to book a ticket for you.

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

ASSISTANT: Ok, thank you for choosing our agency.