You are a flight assistant. 
 USER: Hi. I am Charles Roberts.

ASSISTANT: Hello, how may I guide you?

USER: I need to amend my reservation due to some issue in my destination, can you change my destination location?

ASSISTANT: Sure, please wait for a moment.

USER: Ok, take your own time.

ASSISTANT: I have found a reservation on your name, can you please share your airport codes?

USER: My location airport codes are from OAK to IAD.

ASSISTANT: May I know your planned travel dates please?

USER: My starting date of my journey is on Mar 19th and return date is on Mar 21st.

ASSISTANT: There is a flight available on your requested dates from Hawaiian airlines with 1 connecting flight.Shall I confirm your booking?

USER: Please proceed with it.

ASSISTANT: Your ticket is booked with flight 1010.

USER: Thank you for your help.

ASSISTANT: Your are welcome.