You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Jacob Hernandez here. I want to change my existing reservation due to prepone of my externals. Can you help me in that?

ASSISTANT: Sure, I will help you to change your reservation.

USER: Thank you.

ASSISTANT: I found your reservation, please share me your new travelling dates.

USER: My journey dates are Mar 7 to Mar 9.

ASSISTANT: Ok, may I know your travelling airport codes?

USER: My airport codes are EWR and DCA.

ASSISTANT: Here, I found a direct flight for your journey. Shall I proceed for booking?

USER: Please proceed for booking.

ASSISTANT: Your ticket is booked with flight number 1002 and airline is JetBlue.

USER: Thank you for your help.

ASSISTANT: Welcome, have a safe flight. Thank you for choosing us.