You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Paul Thomas, want to alter my recent reservation due to some personal problem. Please help me out with that.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: We found a reservation for you, can you provide your new airport codes?

USER: That's really happy to hear, my new airport codes are from LAX to LGA.

ASSISTANT: Can I know your travel dates?

USER: My travelling dates are from 01/21 to 01/23.

ASSISTANT: Do you need a connecting flight?

USER: No.

ASSISTANT: Is there any class preference do you have?

USER: No.

ASSISTANT: At what time do you want to depart and return on?

USER: My departing time should be in the afternoon.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: I found an economy class ticket in American Airlines with fare 100 and it is a connecting flight. Can I book your ticket?

USER: Please book this ticket for me.

ASSISTANT: Your booking is reserved with flight number 1006. Your depart time is 15:00 PM and return time is 23:00 PM.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.