You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Margaret Mitchell. I want to change my reservation, due to heavy rainfall in Seattle, can you help me?

ASSISTANT: Yes, I can help you. I have found reservation on your name. Can you share me your travelling dates?

USER: I am departing on 10/28 and return on 10/30.

ASSISTANT: Ok, can I know your nearest airport codes?

USER: I am departing from DEN to DFW.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: I have found a flight ticket with a price of 100 and 1 connection.

USER: Please proceed for booking.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.