You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I serve you?

USER: Can you me in changing an existing reservation, as my plan to meet my friend was postponed?

ASSISTANT: Sure, To check your reservation I need your name.

USER: My name is Brandon Lee.

ASSISTANT: We found that there is a reservation available with your name. May I know your new travelling dates?

USER: My new journey dates are from 08/29 to 08/31. My source and destination codes are,  MCO and JFK.

ASSISTANT: There is a flight available with Frontier airline, flight number 1011 with price 200 with 1 connection.

USER: Please proceed with booking.

ASSISTANT: Your flight is confirmed.

USER: Thank your for assisting me.

ASSISTANT: Thank you for contacting us.