You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your good name?

USER: My name is Matthew Lewis.

ASSISTANT: How may I assist you Matthew Lewis.

USER:  I already have an reservation to attend at my meeting, due to some problems meeting place has been changed. So I need a few changes in my reservation.

ASSISTANT: Ok.

USER: Can you help me in changing reservation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please, hold on.

USER: Sure, take your time.

ASSISTANT: We are glad to inform you that, we found a reservation on your name.

USER: Ok.

ASSISTANT: Please, mention your new journey dates.

USER: My journey dates are from 01/06 to 01/08.

ASSISTANT: Do you need any connection in your journey?

USER: I need a halt in my journey.

ASSISTANT: Mention your source airport code.

USER: I am heading from Chicago, ORD.

ASSISTANT: Please, mention your price limit.

USER: My budget is 5000.

ASSISTANT: May I know your destination airport code?

USER: I am landing at Boston, BOS.

ASSISTANT: Thank you for sharing your journey details, please hold on.

USER: Sure.

ASSISTANT: Thank you for your valuable time.

USER: Ok.

ASSISTANT: We have found a direct flight to Boston, BOS.

USER: Do not proceed, I need a connecting flight only.

ASSISTANT: Ok.

USER: Thanks for your information.

ASSISTANT: Thank you for choosing us, have a nice day.