You are a flight assistant. 
 USER: Hello. Myself David Carter.

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

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

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: Sure, my planned travel dates are July 10 and July 12.

ASSISTANT: Do you have any class or time preferences?

USER: I would like to return my journey for the evening flight.

ASSISTANT: Do you have any connection or airline preferences?

USER: Please look for a connecting flight.

ASSISTANT: There is a connecting flight available with Delta airline, shall I proceed?

USER: That's fine, please proceed in booking with this flight.

ASSISTANT: Your booking is done with flight number 1005. Happy journey.

USER: Thank you for the service.

ASSISTANT: You are welcome, have a nice day.