You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you for the day?

USER: Can you please change my existing reservation due to postpone of my trip?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: My name is Patricia Adams.

ASSISTANT: We found a reservation on your name, can you please share your journey dates?

USER: My new scheduled dates are Jan 22 and Jan 24.

ASSISTANT: Kindly assign your airport codes?

USER: I am heading to DCA from OAK.

ASSISTANT: Please let me know your specifications.

USER: Please book a flight ticket with a connecting flight, return in the morning.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: We found a connecting flight with Hawaiian airlines, price is 200 in economy class, your return flight time is 10:00 AM. Shall I proceed?

USER: Yes, proceed.

ASSISTANT: Your ticket has been reserved with 1000 flight number.

USER: Thank you.

ASSISTANT: Thank you for choosing us.