You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am planning to attend  my Uncle's retirement ceremony in PHL from DEN. Can you find a ticket for me?

ASSISTANT: Sure, may I know your name please?

USER: Yes, I am Paul Smith.

ASSISTANT: Ok, on what date you need booking?

USER: Yes, my  preferable dates are 02/02 to 02/04. Make sure that the connection limit is 1.

ASSISTANT: The AA airline with flight number 1019 is available. Shall I proceed?

USER: Yes, you can proceed with the booking.

ASSISTANT: Ok. Your ticket is confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you.