You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I want to book a ticket from ORD to DEN, can you help me?

ASSISTANT: Sure, can you help me with your travelling dates?

USER: My travel dates are 09/20 and 09/22.

ASSISTANT: Let me know your name, please?

USER: Myself Sarah Nelson.

ASSISTANT: There is a flight-1004 of Delta airlines, where price is 200 with 1 connection. Shall I proceed?

USER: Yes, please.

ASSISTANT: Ok, your booking is done.

USER: Thank you for booking.

ASSISTANT: Welcome.