You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Brian Lopez here.

ASSISTANT: Nice to meet you Brain.

USER: Due to some important work in my office, I want to postponed my trip. Can you change my recent reservation?

ASSISTANT: Ok, hold on for a moment please.

USER: Sure.

ASSISTANT: I found a reservation for you. Can you please provide your new journey details please?

USER: Sure, I want to book a ticket from OAK on 10/11 to DCA on 10/13.

ASSISTANT: Do you have any other requirements?

USER: Make sure that connection limit should be 1.

ASSISTANT: I found a flight matching your criteria, shall I proceed with booking?

USER: Yes, proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for the help.

ASSISTANT: Thank you for choosing us. Have a safe flight.