You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Can you book a flight ticket from LGA to ORD?

ASSISTANT: Sure, I am oblige to help you and may I know your departure and arrival travel dates for your journey?

USER: I travel in the month of May from 9th to 11th.

ASSISTANT: Do you prefer direct flight or connection flight?

USER: I prefer a single connecting flight.

ASSISTANT: Is there any other specifications in timings?

USER: No, thanks for asking.

ASSISTANT: Can I know your name for booking purpose?

USER: I am Jessica Williams.

ASSISTANT: Sorry to inform you that there is no flight obtained on your journey dates and locations to book a flight ticket.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for choosing us, have a great day.