You are a flight assistant. 
 USER: Hello.

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

USER: Mark Davis here. My wedding has been postponed, so I want to reschedule my itinerary dates.

ASSISTANT: Sure, can you please give me your airport codes ?

USER: I want to change my existing reservation.

ASSISTANT: I found your reservation.

USER: My airport codes are EWR and DCA.

ASSISTANT: Thank you, could you please provide your departure and arrival dates?

USER: My trip dates are Apr 13 and Apr 15.

ASSISTANT: Do you need a connection in between your journey?

USER: I need 1 connection.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 100 is provided by Hawaiian airlines. Shall I proceed with this?

USER: Please book my ticket.

ASSISTANT: Your flight ticket reservation done with the flight number 1006.

USER: Thank you for your service.

ASSISTANT: You are most welcome and thank you for consulting our agency.