You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I need to attend an interview, can you please book the ticket from DEN to PHX?

ASSISTANT: May I know your travel dates?

USER: Sure, I would like to depart from my source location on 26th May and I want to return back by 28th May.

ASSISTANT: Do you have any connection limit preferences?

USER: Yes, my maximum connection has to be 1.

ASSISTANT: Is there any other concern?

USER: No, I don't have any other specifications.

ASSISTANT: May I know your name please?

USER: Yes, my name is Anna Harris.

ASSISTANT: No flights found as per your preferences in our database at the moment.

USER: Oh! That's ok, thank you for giving the information anyways.

ASSISTANT: Thank you for choosing us.