You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Edward Jones here.

ASSISTANT: How can I help you Jones?

USER: My interview got postponed, so I want to reschedule my itinerary dates.

ASSISTANT: Sure, I am here to help you with that. Please give me sometime.

USER: Sure.

ASSISTANT: Your reservation has been found, can I know your travel dates please?

USER: My itinerary dates are 08/30 and 09/01.

ASSISTANT: Ok, may I know your airport codes?

USER: My airport codes are DCA and IAH.

ASSISTANT: Ok, please wait for a while.

USER: I need a direct flight.

ASSISTANT: Sorry Jones, there is no direct flight available on your route.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.