You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you now?

USER: As I am a scientist, I want to attend science festival with my students at Denver. Can you help me to book a ticket from PHL to DEN?

ASSISTANT: Sure, I will help you with booking. Please share me your planned journey dates?

USER: My trip dates are 10/24 and 10/26.

ASSISTANT: Do you want any connection in between your flight journey?

USER: I need only direct flight.

ASSISTANT: Please mention your budget for flight ticket?

USER: Price should not cross 1000.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no flight available on your given journey data.

USER: No problem, Thanks for the information.

ASSISTANT: May I know your good name?

USER: Edward Phillips here.

ASSISTANT: Thank you for visiting us, have a nice day ahead.