You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Jason Johnson. I am planning to visit my grand father's house in Denver, can you please help me to book a flight ticket with 500?

ASSISTANT: Yes, I will try for my best assistance. Could you tell me your travelling dates?

USER: My journey dates are from 11/08 to 11/10.

ASSISTANT: Can I know your journey airport codes?

USER: I am travelling from PHL to DEN. And I need a flight with single connection.

ASSISTANT: I have found a flight for you with a price of 100. Can I book the ticket?

USER: May I know the flight details?

ASSISTANT: Flight number is 1003 of Frontier airlines.

USER: Ok, you can proceed.

ASSISTANT: Your ticket has been booked. Thank you for reaching us.

USER: Thanks for your service.