You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I provide assistance to you?

USER: We friends were planning to change the tour place to another, so I request to change the existing reservation.

ASSISTANT: Sure, may I know your name?

USER: My name is Rachel Lee.

ASSISTANT: Please hold on a minute. we will check your reservation status and get back to you.

USER: Sure.

ASSISTANT: We found your reservation, can you share your new journey details?

USER: Sure, my new journey dates are 06/19 and 06/21.

ASSISTANT: Ok.

USER: My source code is MN - MSP. My destination code is DC - IAD.

ASSISTANT: Thanks for providing information.

USER: Ok.

ASSISTANT: We found a direct flight.

USER: Do not proceed, I need a connecting flight.

ASSISTANT: Ok, thank you for availing us.

USER: Thank you.