You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am Mark Davis. I planned to meet my cousin in ORD, can you please help me to book a flight ticket from DFW?

ASSISTANT: Mark Davis, can you please share your preferable dates?

USER: I prefer to travel on 09/17 and 09/19.

ASSISTANT: Ok, wait for a while.

USER: Sure.

ASSISTANT: I found a flight in Hawaiian airlines with the fare 100. Can I proceed?

USER: Ok, please confirm my booking.

ASSISTANT: Ok, your ticket is booked with flight number 1000.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.