You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Michelle Martinez. I want to book a flight ticket from NY - EWR to TX - IAH, can you please help me in flight booking?

ASSISTANT: Ok, please provide your travel dates.

USER: I would like to depart on 09/16, return on 09/18.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Please hold a moment.

USER: Sure.

ASSISTANT: Sorry to say that, there are no flights avilable on the routes of your journey.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us. Have a great day.