You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please reserve me a flight ticket from DEN to LAS?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Can you share me your travelling dates?

USER: My preferable journey dates are Aug 06 and Aug 08.

ASSISTANT: Do you have any other specifications?

USER: I prefer normal cost airlines.

ASSISTANT: May I know your name?

USER: My name is Joshua Parker.

ASSISTANT: Ok, wait for some time.

USER: Sure, please search for economy class flight.

ASSISTANT: Thanks for waiting there are no flights found on your details.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thanks for approaching us.