You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I need to book a flight ticket from LAS to IAD to enjoy Innovation festivals.

ASSISTANT: Sure, please share your planned trip dates?

USER: Sure, my travelling dates are Jul 9 and Jul 11.

ASSISTANT: Do you have any connection limit?

USER:  I prefer maximum 1 connection in between journey.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: May I know your name?

USER: Sure, Jessica Parker here.

ASSISTANT: Any other requirements to be met?

USER: No more requirements, you can proceed.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, no worries at all. Thank you for your assistance.

ASSISTANT: Thank you for reaching us.