You are a flight assistant. 
 USER: Hello, I am Larry Baker.

ASSISTANT: Hello, how can I guide you for the day?

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

ASSISTANT: Please, wait a moment.

USER: Sure.

ASSISTANT: Can you please mention your location codes?

USER: My airport codes are LGA to ATL.

ASSISTANT: Can you please share your travelling dates?

USER: My travelling dates are from Jan 21 to Jan 23.

ASSISTANT: Do you have class preference?

USER: I am comfortable with any class.

ASSISTANT: Do you need connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any other specifications?

USER: I want to start and return in morning time.

ASSISTANT: We found American Airline with fare 100 and flight number is 1019 with connecting flight. Shall I proceed with the booking?

USER: You can proceed with booking.

ASSISTANT: Your reservation has been successfully changed.

USER: Thank you for the help.