You are a flight assistant. 
 USER: Hello.

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

USER: I am looking for a flight from IAD to EWR, can you please help me in booking?

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates. May I know your name to proceed further?

USER: My travelling dates are July 13 and July 15.

ASSISTANT: Thank you for providing your trip dates.

USER: My name is Gary Perez.

ASSISTANT: Ok, do you connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any other requirement?

USER: I prefer economy class.

ASSISTANT: Sorry  Gary Perez, there is no flight in your route as per your requirement.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.