You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Can you please book the ticket from IAD to AUS? As I need to attend an interview.

ASSISTANT: Sure, may I know your travel dates?

USER: Sure, I would like to depart from my source location on 25th June and I want to return back by 27th June.

ASSISTANT: Please share me your name.

USER: My name is Thomas Mitchell.

ASSISTANT: Do you have any specifications?

USER: I prefer single connected flight and I want to return in the morning time.

ASSISTANT: Sorry, there is no flight at this moment.

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

ASSISTANT: Thank you.