You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for today?

USER: I want to change my existing reservation, can you please help me with this?

ASSISTANT: I am here to help you about that. Can you please provide your name for checking the reservation status?

USER: I am Larry Adams.

ASSISTANT: I found your reservation, can you please provide your modified dates of journey?

USER: I prefer to travel on Nov 13 and Nov 15.

ASSISTANT: Can you please provide your nearest airport codes of journey?

USER: My airport codes are OAK and SEA.

ASSISTANT: Do you have any specification for your journey?

USER: I prefer to travel in a connecting flight.

ASSISTANT: As per your requirements, I have found a connecting flight to your region on your planned dates of journey which departures in the morning having a ticket fare of 100 by Hawaiian airlines. Shall I proceed with the booking?

USER: Ok, please confirm my booking.

ASSISTANT: I have booked your flight ticket with the flight 1023.

USER: Thank you for your help.

ASSISTANT: You are welcome, thank you for choosing our service.