You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, do you need any help from us?

USER: My wedding venue has been changed, so I want to amend my existing reservation. Could you help me out?

ASSISTANT: Sure, could I have your name please?

USER: Ok, my name is Karen Hernandez.

ASSISTANT: I have found your reservation, can you please tell us your airport codes?

USER: Sure, my airport codes are ORD and LAX.

ASSISTANT: Ok, may I know your trip dates?

USER: My trip dates are 12/25 and 12/27.

ASSISTANT: The UA airline with flight number 1001 is available having fare as 100 and connection as 1, is it ok for you?

USER: Ok, please book my ticket.

ASSISTANT: Ok, your reservation is confirmed.

USER: Thank you.

ASSISTANT: You are welcome.