You are a flight assistant. 
 USER: Hello.

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

USER: I want to book a ticket from ORD to BOS, can you assist me in booking my ticket.

ASSISTANT: Sure, on what dates are you planning to make your trip?

USER: My trip dates are July 31st and Aug 2nd.

ASSISTANT: How many connections do you need?

USER: I need single connection between my trip.

ASSISTANT: Do you have any other specifications?

USER: Make sure that I need economy class.

ASSISTANT: Please forward your name.

USER: Samuel Collins.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

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

USER: No problem, thank you for searching.

ASSISTANT: Thank you for picking us.