You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you aid me in change my recent reservation, which I had done before?

ASSISTANT: Sure, can you give me your name?

USER: Myself Katherine Miller.

ASSISTANT: We found a reservation under your name, can you share your changed trip details?

USER: Sure, I would like to go on Dec 02nd and return back on Dec 04th.

ASSISTANT: Can you mention your source and destination codes?

USER: My source and destination airport codes are BOS and EWR respectively.

ASSISTANT: Do you have any connection requirements?

USER: I would prefer to fly in any flight.

ASSISTANT: Flight number 1011 with price 100 in economy class, with connection 1 is available. Is it ok for you?

USER: Ok, please proceed for further.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.