You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Karen White.

ASSISTANT: How can I aid you?

USER: Can you help me in changing my recent reservation?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Reservation found, please tell me your trip dates.

USER: I will fly from 11/05 to 11/17.

ASSISTANT: May I know your airport codes please?

USER: My source is PHL to JFK.

ASSISTANT: Please confirm your trip dates. I found a flight 1001 of Southwest airlines for you.

USER: You can book it.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: You are welcome.