You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Patricia Smith.

ASSISTANT: How may I assist you?

USER: I want to book a flight ticket from IAH to LGA. Could you please help me in booking a flight ticket?

ASSISTANT: Sure, let me know your travel dates?

USER: My travel dates are from 11/09 to 11/11.

ASSISTANT: Do you need any halt in between your journey?

USER: I need a stopover in between my journey.

ASSISTANT: Do you need any other specifications?

USER: No.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flight services available on your given route.

USER: No problem, thanks for your information.

ASSISTANT: Thanks for reaching us, have a nice day.