You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I am Charles Robinson. I am planning to attend Tennis competition in Philadelphia PHL from DEN. Can you find a flight ticket for me?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Thank you. my planned trip dates are on May 13 and return on May 15.

ASSISTANT: Do you have any preference?

USER: Ok, I want to a business class.

ASSISTANT: There is a flight with connection 1 and price 300, can I proceed?

USER: You can go ahead with the ticket booking.

ASSISTANT: Ok, your ticket has been booked with flight number 1013.

USER: Thank you for your valuable time.

ASSISTANT: Thank you for reaching us.