You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: Can you help me in changing my existing reservation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: I am Nicholas Wilson.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: I found your reservation on your name, let m e know your travel dates please?

USER: I want to travel on 10/05, and return on 10/07.

ASSISTANT: Could you please share me your airport codes?

USER:  I need to leave from my nearest airport LAS to reach SEA.

ASSISTANT: May I know your connection limit?

USER: I need a single connection.

ASSISTANT: Do you have any other preference?

USER: No.

ASSISTANT: Delta Airlines is providing connecting flight with the ticket fare of 200 and depart time is 3:00 AM, arrival time is 9:00 AM. Shall I proceed?

USER: Proceed with the booking.

ASSISTANT: Your ticket has been confirmed by flight number 1020 and an economy class.

USER: Thanks for the information.

ASSISTANT: Thanks for choosing us.