You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Patricia Clark. I would like to change my reservation which is under my name. Can you please help me with that?

ASSISTANT: Wait for a while, let me check.

USER: Sure, take your time.

ASSISTANT: I found your reservation, may I know your airport codes?

USER: Sure, my source airport code is SEA and the destination airport code is OAK.

ASSISTANT: Ok, can I have your travel dates?

USER: I would like to take off on Dec 9 and return on Dec 11.

ASSISTANT: I got a connecting flight-1001 with price 100, is it ok for you?

USER: Yes, please proceed with the booking.

ASSISTANT: Ok, booking is done on UA airlines.

USER: Thank you for your help.

ASSISTANT: Thanks for contacting us.

USER: You are welcome.