You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I need to change my existing reservation, can you help me in doing that?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: I found your reservation, may I know your trip dates?

USER: My trip dates are Sep 27 to 29.

ASSISTANT: Is there any connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Please mention your travelling airport codes.

USER: My airport codes are IAH to LAS.

ASSISTANT: May I know your good name?

USER: I am Timothy Thompson.

ASSISTANT: There is a flight with the price of 200 and 1 connection limit. Can I proceed to booking?

USER: Ok, proceed.

ASSISTANT: Your ticket has booked successfully with the flight- 1002.

USER: Thank you.

ASSISTANT: Thank you for reaching us.