You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Patricia Thompson.

ASSISTANT: Patricia Thompson, how may I aid you?

USER: Please reserve me a flight ticket from DFW to PHX.

ASSISTANT: Sure, please provide your itinerary dates.

USER: My preferable journey dates are Oct 15 and Oct 17.

ASSISTANT: Do you have any specifications?

USER: I would like to return back in the afternoon.

ASSISTANT: Do you have any other preferences?

USER: I prefer direct flight.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no flights are available as per your requirements.

USER: No problem, thank your for the information.

ASSISTANT: Thank you for approaching us.