You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Myself Lisa Evans. I need to visit Charlotte to participate in marathon organised by social workers. So please help me with flight ticket booking from Las Vegas.

ASSISTANT: Sure Lisa, I will help you with that. Can I have your travel dates please?

USER: Actually, marathon will be held on 04/30. So I would like to departure on 04/29 and return will be on 05/01.

ASSISTANT: Ok Lisa, let me know airport codes of your journey locations.

USER: Sure, I would like to travel from LAS to CLT.

ASSISTANT: Ok Lisa, please be on hold for a moment to check flight availability.

USER: Sure, take your time.

ASSISTANT: I have found a flight with connection 1 and price 100 in Delta airlines. Shall I proceed with booking?

USER: That is fine, please proceed with booking.

ASSISTANT: Ok Lisa, your booking has done with flight number 1017.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us, have a great journey.