You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know how best I can help you today?

USER: Can you help me to change my recent reservation?

ASSISTANT: Sure, I can help you in that.

USER: Thank you.

ASSISTANT: May I know your good name please to track the details?

USER: Sure, my name is Ashley Robinson.

ASSISTANT: To proceed further, I need to know your new journey dates?

USER: My journey dates are May, 18 and May, 20.

ASSISTANT: May I know your airport codes please?

USER: DTW and EWR are my airport codes.

ASSISTANT: Do you have any particular time for departing and returning?

USER: My depart time should be at morning.

ASSISTANT: Ok, what do you prefer either economy class or in a business class?

USER: I am comfortable with any class.

ASSISTANT: Is there any other specifications for you?

USER: I need a connecting flight and prefer only normal cost airlines.

ASSISTANT: We have found a connected flight with Hawaiian airlines, flight number 1000 and departing time is morning. Shall I proceed for booking?

USER: Please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thanks for reaching us, wish you a great journey.