You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What type of service you are excepting from us?

USER: Myself Pamela Hall, I need to change my reservation which I have done previously as my scheduled got postponed. So, can you please help me out?

ASSISTANT: Sure, I am here to help you with that.

USER: Thanks for reacting positively.

ASSISTANT: Yes Hall, your reservation has found. Can I know your travelling dates?

USER: Good to hear that. My travelling dates are 07/29 and 07/31.

ASSISTANT: Ok, may I know your modified locations?

USER: My modified location codes are DEN and LGA.

ASSISTANT: Please wait for a minute.

USER: Sure, have your time.

ASSISTANT: The UA airlines are providing a flight having a connection limit 1 with the price is 100. Shall I proceed?

USER: Yes, do proceed with the booking.

ASSISTANT: Yes Hall, your ticket is conformed with the flight number 1026.

USER: Thank you for booking my flight ticket with the UA airlines.

ASSISTANT: Thank you  for reaching us.