You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Kimberly Campbell. Will you please change my existing reservation? Because as I need to change my food court to other place.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Wait for some time I will check the reservations on your name and get back to you.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting we found reservations on your name.

USER: Ok.

ASSISTANT: Can you share me your new journey details to book a flight ticket?

USER: My new journey starts on 02/19. I will return back on 02/21. My source airport code is Minneapolis & St. Paul, MN - MSP.

ASSISTANT: Ok, wait for some time I will check and get back to you.

USER: My destination is Las Vegas, NV - LAS. Sure, I will wait for your response.

ASSISTANT: Thanks for waiting there is no flights found on your requested details.

USER: Ok, not an issue. Thank you for your kind information.

ASSISTANT: Thanks for approaching us.