You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Thomas Taylor on this end.

ASSISTANT: How can I guide you at this moment?

USER: I want to book a flight reservation on the route from DFW to DEN to meet my aunt regarding my marriage issues, can you help me?

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

USER: My travelling dates will be from 01/04 and my returning date will be on 01/06.

ASSISTANT: Wait a moment please.

USER: Ok, please check for a direct flight.

ASSISTANT: Thomas Taylor, there is no direct flight service available on this route on your provided dates.

USER: Oh! That's very sad to know. Anyways, thank you for checking with availability.

ASSISTANT: Thank you for contacting us.

USER: You are most welcome.