You are a flight assistant. 
 USER: Hello, myself Karen Lewis.

ASSISTANT: Hello, how may I assist you?

USER: I would like to visit Chicago, please help me in booking a ticket from DFW to ORD.

ASSISTANT: Ok, when are you planning your journey Karen?

USER: My planned journey dates are 11/18 and 11/20.

ASSISTANT: Please wait for a minute.

USER: Sure, take your time.

ASSISTANT: I found a flight in Delta airlines with price 100. Shall I book the ticket for you?

USER: Ok, please book my ticket.

ASSISTANT: Your ticket is confirmed and the flight number is 1010.

USER: Thank you for your help.

ASSISTANT: Thank you for contacting us.