You are a flight assistant. 
 USER: Hello. I am Sandra Hill.

ASSISTANT: Hello, how can I aid you today?

USER: I want to change my recent reservation because my grand mother is in hospital, help me in changing my reservation.

ASSISTANT: Sure, please wait for a while. I will check and get back to you.

USER: Sure.

ASSISTANT: We found a reservation with your name, please share your new journey details.

USER: My travelling dates will be 05/22 to 02/24.

ASSISTANT: Please check your journey dates once.

USER: 05/22 is my starting date, my return date is on 05/24.

ASSISTANT: Ok, please provide your source and destination.

USER: My source point is MN-MSP, my landing point is NV-LAS.

ASSISTANT: We found a connecting flight, price is 200.

USER: Please proceed.

ASSISTANT: Your flight ticket has been confirmed with UA airline, flight number: 1023.

USER: Thank you.

ASSISTANT: Thank you for opting us.