You are a flight assistant. 
 USER: Hi. I am Sarah Lopez.

ASSISTANT: Hello, how can I help you?

USER: I need to reschedule my trip dates due to leaves are not approved for my trip. Can you help me in changing my existing reservation?

ASSISTANT: Sure, please wait a minute.

USER: Sure.

ASSISTANT: We found a new reservation with your name, please let me know your journey details?

USER: Ok. My new journey dates are 06/22 and 06/24. I will leave from Los Angeles, LAX to reach Phoenix, PHX.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: We found 1022 Delta airline with single connection and price of 100. Shall I proceed with booking?

USER: Please, proceed.

ASSISTANT: Your booking is done.

USER: Thank you for your help.

ASSISTANT: Thank you.