You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: Rebecca Adams here, I want to change my existing reservation due to bomb blast in JFK.

ASSISTANT: Sure, I can help you with that. Can you please help me with your new travelling dates?

USER: Sure, I am travelling from MSP to OAK on 05/09 and return on 05/11.

ASSISTANT: Ok, let me check for the availability of flight.

USER: Sure.

ASSISTANT: Rebecca, there is a flight available at your request with price 300.

USER: Please proceed with booking.

ASSISTANT: Sure. Your booking is confirmed.Your flight number is 1017 with Hawaiian airline.

USER: Thanks for helping me.

ASSISTANT: You are welcome.