You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Anna Martinez. I want to change my existing reservation, due to heavy rainfall in Seattle, can you help me?

ASSISTANT: Sure, please allow me moment to check for the previous reservation.

USER: Sure.

ASSISTANT: I found your reservation. Can you please help me with the new travel dates?

USER: I am departing on 10/23 and return on 10/25.

ASSISTANT: Could you please help me with the airport codes?

USER: My departure is from JFK airport and land in OAK airport.

ASSISTANT: Let me check for the availability of flight.

USER: Sure, take your time.

ASSISTANT: Anna, there is a flight available with price 100 and the connection is 1 with Frontier airline. Would you like me to proceed with the booking?

USER: Please proceed for booking.

ASSISTANT: Your booking is confirmed with 1023 flight number.

USER: Thank you for your service.

ASSISTANT: Thank you for opting us.