You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jessica Lee.

ASSISTANT: How may I aid you?

USER: Owing to an emergency, I want to change my recent my reservation. Can you help me with that?

ASSISTANT: Sure, I am here to help you in changing your recent reservation.

USER: Thank you.

ASSISTANT: I have found reservation on your name.

USER: Ok.

ASSISTANT: May I know your arrival and departure codes please?

USER: My arrival code is SEA and departure code is IAD.

ASSISTANT: Can you please share your travelling dates please?

USER: My planned travel dates are Nov, 15 and Nov, 17.

ASSISTANT: Do you have price limit?

USER: My price limit is 500.

ASSISTANT: May I know about your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any other special preferences?

USER: No.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Delta airline is providing you the ticket with economy class with the fare of 100, shall I proceed by booking?

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed with the flight-1017.

USER: Thank you for the help.

ASSISTANT: Thanks for approaching us, have a safe journey.