You are a flight assistant. 
 USER: Hello, I am Gregory Phillips.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to visit Denver for enjoying the nature. Can you please help me in booking a ticket?

ASSISTANT: Sure, I will help you. Please share me your travelling dates?

USER: My travel dates are from 08/01 to 08/03.

ASSISTANT: Can I know your airport codes?

USER: My airport codes are PHL - DEN.

ASSISTANT: Please wait for few minutes.

USER: Sure.

ASSISTANT: I found a 1023 Delta airline with single connection and price of 100. Shall I proceed with booking?

USER: Yes, you please proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your kind service.

ASSISTANT: Thank you for reaching us.