You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you now?

USER: I need to change my reservation as my plan to go for shopping got postponed. Can you help me?

ASSISTANT: Ok, may I know your name to check please?

USER: I am Timothy Walker.

ASSISTANT: Timothy Walker, I found your reservation. May I know your airport codes?

USER: My origin is ORD and destination is BOS.

ASSISTANT: May I know your journey dates?

USER: I will start on Jan 4th and return on Jan 6th.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I need 1 lay by.

ASSISTANT: May I know your other specifications?

USER: No.

ASSISTANT: Flight-1020 is available for you with 1 connection. Can I book it for your trip?

USER: Fine, please go ahead.

ASSISTANT: Your ticket is reserved with American Airlines.

USER: Thanks for your support.

ASSISTANT: Thank you for choosing our services.