You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Jerry Garcia here.

ASSISTANT: How can I guide you Jerry?

USER: My client meeting got postponed, so I want to reschedule my trip dates.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: I found your reservation, please  mention your travel airport codes.

USER: My airport codes are PHX and DTW.

ASSISTANT: May I know your itinerary dates?

USER: My itinerary dates are 06/25 and 06/27.

ASSISTANT: We find a flight ticket in Delta airline and 1009 as flight number.

USER: Please book my ticket.

ASSISTANT: I confirmed your ticket.

USER: Thank you.

ASSISTANT: You are welcome, have a great day.