You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I just want to change my existing reservation, due to sudden demise of my grand mother.

ASSISTANT: Sure, I am here to help you. May I know your name please?

USER: Edward Green is my name.

ASSISTANT: Ok, please wait for a mean while.

USER: Ok.

ASSISTANT: There is a reservation found under your name to change it, can you please help me with your dates of journey?

USER: My trip dates will be July 28 to July 30.

ASSISTANT: Ok, can you please mention with your respective airport code of journey?

USER: My airport codes will be SEA to CLT.

ASSISTANT: Do you have any other requirements please?

USER: I want connected flight.

ASSISTANT: Ok, please wait for a mean while.

USER: Ok.

ASSISTANT: I found a connecting flight of fare 100 with the Southwest airline, shall I proceed with this booking?

USER: Please proceed.

ASSISTANT: Ok, your booking is done with the flight number 1016, your depart time is at 5:00 hours and return will be at 7:00 hours.

USER: Thank you.

ASSISTANT: You are welcome, have a safe journey.