You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I aid you today?

USER: My name is Ashley Lewis and I want to book a ticket.

ASSISTANT: Thank you for giving your name, May I know your travelling details?

USER: I would like to travel to Los Angeles, CA - LAX from Denver, CO - DEN.

ASSISTANT: Can you please let me know your journey dates?

USER: My schedule dates are from Apr/01 to Apr/03.

ASSISTANT: Please wait a while, I will check the availability of the flights.

USER: OK. Can you please make sure that the price limit should be 200 with one connection?

ASSISTANT: OK. Thank you for waiting, Sorry we found no flights matches your requirement.

USER: OK, Thank you for your service.

ASSISTANT: Thank you for choosing us, Have a nice day.