You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to go for DFW from ORD, can you please search a flight ticket?

ASSISTANT: Sure, can I know the travel dates please?

USER: My preferable dates are 10/17 and 10/19.

ASSISTANT: Ok, wait a moment please.

USER: Ok.

ASSISTANT: There is a flight in Delta airline with price 100, can I book it?

USER: Ok, please confirm my ticket with Helen Thompson.

ASSISTANT: Your ticket has been booked with flight number 1005. Thank you for approaching us.

USER: Thank you.