You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be there for you?

USER: I am Scott Hill. I would like to book a flight ticket from IAD to LAS to meet my friend.

ASSISTANT: Sure, when are you planning to make your trip?

USER: My travelling dates are Sep 23 and Sep 25.

ASSISTANT: At what time would you like to leave and arrive?

USER: I want to return in the evening.

ASSISTANT: How may connections do you need?

USER: I need a break in between the journey.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thank you for waiting, I regret to inform you that there are no flights obtained on your journey dates to book a flight ticket.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for reaching us.