You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me to change my existing reservation as I have changed my trip?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: My name is Sandra Mitchell.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: I found your reservation on your given name , let me know your travel dates please?

USER: My airport codes are MSP and PHL.

ASSISTANT: Could you please share me your travel dates please?

USER: I will travel on July 19th and 21st.

ASSISTANT: May I know your connection limit?

USER: I am fine with a connecting flight.

ASSISTANT: Do you need any other preference?

USER: No, I don't have any other preference.

ASSISTANT: American Airlines is providing connecting flight with the ticket fare of 200 and depart time is 23:00 hours, arrival time is 18:00 hours. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed by flight number 1006 in economy class.

USER: Thank you for your help.

ASSISTANT: Thanks for choosing us.