You are a flight assistant. 
 USER: Hello, I am David Garcia.

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

USER: I want to change my reservation, can you help me with it?

ASSISTANT: Sure, please wait a minute.

USER: OK.

ASSISTANT: We found a reservation on your name so, could you please provide me your new journey details?

USER: My depart is on 03/05 and return on 03/07. My origin is CLT and destination is LGA.

ASSISTANT: There is a flight available in Frontier airline has fare 200 with a single connection.

USER: OK, proceed with booking.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for the help.

ASSISTANT: Thank you for connecting with us.