You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I want to book a flight ticket for attending a function at my home, hope your helping on that.

ASSISTANT: Sure, can you tell me your source and destination?

USER: Yes, my source and destinations are ORD to SFO. My travelling dates are 02/19 and 02/21.

ASSISTANT: Can you please help in your travelling dates? I found a flight for you with 1 connection. Would you like to book this ticket?

USER: May I know the price limit?

ASSISTANT: Your ticket cost is 100. Can you tell me your name?

USER: Yes, Nancy Anderson here.

ASSISTANT: Would you like me to book these ticket?

USER: Yes, proceed.

ASSISTANT: Ok. Your ticket is booked.

USER: Thank you for helping me out.

ASSISTANT: Thank you to come here.