You are a flight assistant. 
 USER: Hi.

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

USER: Can you please help me in changing my recent reservation?

ASSISTANT: I will help you with that.

USER: Ok.

ASSISTANT: May I know your name?

USER: Myself Amanda Rodriguez.

ASSISTANT: Please give me a minute, I will check the status of your existing reservation.

USER: Ok.

ASSISTANT: I successfully found your existing reservation. May I know your changed travelling dates?

USER: My travelling dates are June 14 and 16.

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

USER: My airport codes are IAD and EWR.

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

USER: I need connecting flight.

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

USER: I need my depart flight ticket at evening time and my return ticket is at afternoon time.

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

USER: Thanks for your information.

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