You are a flight assistant. 
 USER: Hi, I am Kathleen Thompson.

ASSISTANT: Hello Thompson. How can I provide support to you?

USER: I would like lo change my recent existing reservation because  my friend  who is participating is gun shooting  has been postponed.

ASSISTANT: OK, please wait a moment.

USER: Sure.

ASSISTANT: I will go through your reservation and update you. We are happy to inform you, we found your reservation. Please share all your travel details for booking?

USER: My  travelling dates are 04/15 and return on 04/17.

ASSISTANT: Ok, also provide your desired airport abbreviates?

USER: My airport codes are ORD and CLT.

ASSISTANT: There is a flight in UA airline with price 100 matching your criteria. Shall I make the booking?

USER: You can proceed.

ASSISTANT: Your booking has been made with flight 1002.

USER: Thank you for booking a ticket.

ASSISTANT: Thanks for availing our services.