You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I would like to change my reservation as I am leaving for delegates meet, can you please help me out?

ASSISTANT: Sure, I am here to help you to change the ticket details. Can I have your good name to check the ticket status?

USER: Check reservation on the name Catherine Hernandez.

ASSISTANT: Ok, I have successfully found your past reservation in our portal. Can I know your travel dates?

USER: I am travelling on these dates Aug 5th and 7th.

ASSISTANT: What are your source and destination airport codes?

USER: I am flying from PHL to BOS.

ASSISTANT: Ok, do you have any specifications?

USER: I need single connected flight.

ASSISTANT: Ok, I have found a flight-1020 which is matching to your requirement, the ticket cost is 100. Shall I proceed to book an economy class ticket?

USER: Ok, you can proceed.

ASSISTANT: I have changed the details and booked a flight in the United Airlines which departs in the morning time and returns in the afternoon time. Have a nice journey.

USER: Thank you for your services.

ASSISTANT: You are welcome. Thank you for reaching us.