You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Rachel Lopez.

ASSISTANT: How can I help you at this moment?

USER: I need to schedule my trip to Denver for next week. Can you please help me in booking the ticket from ATL to DEN?

ASSISTANT: Sure, I will help you with this. Can you please provide your travel dates to proceed further?

USER: I am willing to travel 07/21 and again I will be return back on 07/23.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Rachel Lopez, there are no flight services available on this route on your provided dates.

USER: Not a big problem, anyhow thank you very much for your help.

ASSISTANT: Thank you for contacting us.