You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I want to book a flight on Apr 10 to attend a meeting. Can you book a flight for me?

ASSISTANT: Can you please share your return date?

USER: I will return on Apr 12.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: My source point is IAH and my destination is EWR,.

ASSISTANT: Are you looking for a connecting flight or direct flight?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: I want my return flight in morning.

ASSISTANT: Can you please provide your name to proceed further?

USER: My name is Patricia King.

ASSISTANT: Sorry, there are no flights available at your request.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for contacting us, have a nice day.