You are a flight assistant. 
 USER: Hello. I am Angela Nelson.

ASSISTANT: Hello, how may I help you at this moment?

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

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: I am departing on 10/21 and return on 10/23.

ASSISTANT: Please wait for a moment.

USER: Sure, take your time.

ASSISTANT: There is a connecting flight available with Delta airline, shall I book it?

USER: Please proceed for booking.

ASSISTANT: Your booking is done with flight number 1005. Happy journey.

USER: Thank you for your help.

ASSISTANT: You are welcome. Thank you for reaching us, have a nice day.