You are a flight assistant. 
 USER: Hi, myself Donald Nelson.

ASSISTANT: Hello, how may I assist you?

USER: Owing for an emergency, I want to travel from DFW to EWR. Please book the flight ticket for me.

ASSISTANT: Sure, may I know your planned travel dates?

USER: I want to depart on 02/24 and return on 02/26.

ASSISTANT: Please give me a minute, Donald.

USER: Sure.

ASSISTANT: I found a flight in Hawaiian airlines with price 200. Shall I book the ticket for you?

USER: Please book the ticket.

ASSISTANT: Your ticket is confirmed and the flight number is 1000.

USER: Thank you for your service.

ASSISTANT: Thank you for contacting us.