You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you at this moment?

USER: Can you find a flight for me from IAH to EWR?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Ok, my trip dates are from Apr 12 to 14.

ASSISTANT: Please let me know if you need a connecting flight in your journey.

USER: I need a direct flight.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: To proceed further, can I know your name?

USER: Sure, I am Samantha Harris.

ASSISTANT: Please wait, I will check the availability of flights and let you know.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your route.

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for approaching us.