You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I assist you?

USER: Owing to an emergency I had to request for change reservation.

ASSISTANT: Sure, we will help you in changing your reservation. Can you please share me your name so that I can check your details?

USER: I am Nicole Campbell.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, we have found a reservation on your name. Please provide me your new journey details to proceed further.

USER: Please book a ticket from Washington DC-DCA to Las Vegas, NV-LAS.

ASSISTANT: Ok, what are your journey dates?

USER: My journey dates are from 10/18 to 10/20.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: We have a flight in JetBlue airline at a fare 100 with a halt from flight number 1001. Shall I proceed?

USER: Please proceed to book a ticket.

ASSISTANT: Your reservation has been done.

USER: Thank you.

ASSISTANT: Thank your for consulting us.