You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to travel from EWR to JFK, can you please help me to book a flight ticket?

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

USER: My travelling dates are May 03 and May 05.

ASSISTANT: Do you have any class preference?

USER: I am comfortable to travel in any class.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I need a connecting flight.

ASSISTANT: Do you have any particular time for departing and returning?

USER: My depart time is morning.

ASSISTANT: May I know your good name please?

USER: My name is Donald Scott.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for approaching us.