You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today from my end?

USER: I am planning to travel from IAH to EWR, help me in booking a flight?

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: My travelling dates are Mar 19 to 21.

ASSISTANT: May I know your name to proceed further?

USER: I am Gary Thompson.

ASSISTANT: Do you have any connection limit?

USER: I prefer direct flight.

ASSISTANT: Sorry  Gary Thompson, there is no flight in your route as per your request.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.