You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

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: Sure, I am glad to help you in booking. Can you please tell me your name?

USER: I am Brian White.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Happy to inform you that, I found your reservation. Can you please share me your travelling airport codes?

USER:  I need to leave from my nearest airport PHL to reach DEN.

ASSISTANT: On which dates you want me to book your ticket?

USER: I want to travel on 03/09, and return on 03/11.

ASSISTANT: Do you have any specification?

USER: I need a single connection.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Here, I found a flight for you with 1 stopover in economy class and It costs you 100. Can I proceed?

USER: Proceed with the booking.

ASSISTANT: Your booking is done with flight 1015 in AA airlines.

USER: Thanks for the help.

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