You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How could I oblige you today?

USER: Owing to an emergency, my scheduled plan to attend a workshop on SAP technology has been postponed. So I request you to change my existing reservation?

ASSISTANT: Sure, I will be blissful to aid you. One moment please, let me check your current status and revert to you.

USER: I have a existing reservation with name Kathleen Walker.

ASSISTANT: Thanks for waiting. We are pleasure to inform, there is a reservation found with your provided name.

USER: Ok.

ASSISTANT: Can you please, let me know your new journey locations?

USER: Sure, my new journey deviates from Orlando MCO to San Francisco SFO.

ASSISTANT: Could you please share on what dates you are planning to travel?

USER: Sure, my arrival and departure dates are 07/07 and 07/05.

ASSISTANT: Do you need any other requirements?

USER: Yes, I need a halt. And it will be helpful if price limit is 500.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: We are glad to notify, there is a flight found with your given details. Flight number:1009, airline:UA with one stopover. Would you like me to proceed?

USER: Please go ahead.

ASSISTANT: Ok, your reservation has been done successfully.

USER: I appreciate your quality service.

ASSISTANT: Thank you for communicating with us.