You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I got an invitation to attend seafood festival, can you please book the ticket from DEN to SEA?

ASSISTANT: Sure, I will help you with that. Please let me know your travelling dates.

USER: Sure, I would like to depart from my source location on 7th June and I want to return back by 9th June.

ASSISTANT: Do you prefer any stopover in between journey?

USER: I prefer single connected flight to travel.

ASSISTANT: Are there any other specifications for you?

USER: I want to return in the afternoon time.

ASSISTANT: May I know your good name?

USER: My name is Christine Rodriguez.

ASSISTANT: Sorry, no flights are available on your journey routes.

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

ASSISTANT: Thank you for contacting us.