You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to change my existing reservation. Could you help me with that?

ASSISTANT: Sure, we are here to help you. May I know your name?

USER: Alexander Adams.

ASSISTANT: Ok, wait for some time.

USER: Ok.

ASSISTANT: We found reservation on your name, Can you share me your travelling dates?

USER: My dates are from Sep 15 - 17.

ASSISTANT: May I know your airport codes?

USER: SEA to PHX.

ASSISTANT: Do you have any other specifications?

USER: I prefer connecting flight.

ASSISTANT: We found Hawaiian airline with connecting flight and number 1023 fare of 400, Shall I proceed for booking?

USER: Yes, please proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thanks for approaching us.