You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I want to fly from DEN to LAX. Can you book a ticket from that route?

ASSISTANT: Sure, may I know your travelling dates?

USER: My planned travel dates are 07/16 and 07/18.

ASSISTANT: On which name shall I reserve flight ticket?

USER: On the name of Dennis Wilson.

ASSISTANT:  Do you need any specifications?

USER: I want a flight with single connection.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there are no flight tickets available on your journey dates.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for reaching our service.