You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: I want to change my reservation, due to examination schedule postponed. Can you please help me?

ASSISTANT: Sure, we are perky to help you.

USER: Thank you.

ASSISTANT: Can you please share your good name with us?

USER: My name is Elizabeth Thomas.

ASSISTANT: Please be on hold. I will check and revert you.

USER: Sure, I will wait for your response.

ASSISTANT: We found a reservation on your name. Can you please share your airport codes?

USER: My airport codes are CLT and BOS.

ASSISTANT: May I know your trip dates?

USER: My travelling dates are May 27 and May 29.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: May I know your arrival and depart timings?

USER: I am comfortable to travel in any time.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: We found a connecting flight of fare 200 with airline United and number is 1009. Can I proceed?

USER: Ok, please book.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.