You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Due to sudden change of my business meeting because of some technical problem, I need to change my reservation so can you help me with that?

ASSISTANT: Yes, can you tell me your name?

USER: I am Frank Phillips.

ASSISTANT: I have found reservation on your name. Can you share me your dates of travel?

USER: I will start on 07/12 and return on 07/14.

ASSISTANT: Can I know your nearest airport codes?

USER: My travelling airport codes are LAX to BOS?

ASSISTANT: Do you have any preferences?

USER: I need a direct flight in my journey.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: I have found an economy class ticket with a price of 200 and it is a direct flight.

USER: Please proceed with the booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.