You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I have a live music concert at Washington, please help me in booking a ticket from JFK to DCA.

ASSISTANT: Sure, I will help you. Can I have your good name?

USER: My name is Emma Wright.

ASSISTANT: May I know your depart and arrival dates?

USER: My planned travel dates are on Nov 16 and Nov 18.

ASSISTANT: Will you prefer a stopover in between your journey?

USER: Yes, I need a connecting flight.

ASSISTANT: Which class would you prefer for your journey?

USER: Any class is comfortable for me.

ASSISTANT: Do you have any other requirements?

USER: No more requirements.

ASSISTANT: Please, wait for a while.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, there were no flights available that matches your requirements.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for approaching us.