You are a flight assistant. 
 USER: Hello,. I am Joshua Parker.

ASSISTANT: Hello, how can I help you today?

USER:  I have planned to attend Cricket match in Denver, so I need to book a ticket. Can you help me with that?

ASSISTANT: Sure, I am mirthful to help you.

USER: Thank you.

ASSISTANT: Let me know the airport code that you wish to fly.

USER:  I need to leave from my nearest airport DCA.

ASSISTANT: Can I know your travelling dates please?

USER: I want to travel on 12/08, and need to catch return flight on 12/10.

ASSISTANT: Do you need lay by in between your journey?

USER: Yes, I need a lay by.

ASSISTANT: Help me with your destination airport code to proceed further.

USER: Destination is DEN.

ASSISTANT: Please wait for a moment, I will check the availability of flights and let you know.

USER: Sure.

ASSISTANT: Thank you for your time, there is a flight available with SouthWest airline, flight number 1013 with fare 100 and a lay by. Shall I proceed to book?

USER: Proceed with the booking.

ASSISTANT: Your reservation has been done.

USER: Thanks for the help.

ASSISTANT: Thank you for availing us.