You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: Myself Joseph Scott. I already have an reservation to attend a meeting, due to some problems meeting place has been changed. So I need a few changes in my reservation, will you help me with that?

ASSISTANT: Sure, I am here to help you out. Please allow me a moment.

USER: Ok, I will wait for your response.

ASSISTANT: I found an active reservation on your name in our database. Please provide me your new planned trip dates.

USER: My airport codes are BOS an LGA.

ASSISTANT: Thank you for providing your location airport codes, please mention me your new planned trip dates.

USER: My travelling dates are 06/10 and 06/12.

ASSISTANT: Here is a flight with 2 stop overs and airfare is 100 in 1020 Delta airlines, can I proceed with it?

USER: I need a flight with single connection.

ASSISTANT: I regret to inform you that there is no flight with 1 stop over with your travel dates. Sorry for inconvenience caused.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.