You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I'm planning to attend client meeting, can you book the ticket from DEN to DFW?

ASSISTANT: Sure, may I know your journey dates?

USER: Sure, I would like to depart from my source location on 22nd June and I want to return back by 24th June.

ASSISTANT: Is there any connection limit?

USER: I just need direct flight.

ASSISTANT: Do you have any other specifications?

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

ASSISTANT: May I know your name?

USER: My name is Jennifer Garcia.

ASSISTANT: Please wait for a minute.

USER: Sure, I'll wait for your response.

ASSISTANT: Sorry, there were no flights found on your route.

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

ASSISTANT: Thank you for contacting us.