You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am John Davis.

ASSISTANT: How may I help you?

USER: I am planning to book a ticket from ORD to LAX. can you please help me out to book  a ticket for me?

ASSISTANT: May I know your travel dates?

USER: I am planning to travel on 11/19 and return back on 11/21.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 100 with flight number 1013. Shall I proceed with this flight?

USER: That's fine, please proceed the booking.

ASSISTANT: Your booking is done.

USER: Thank you for your service.

ASSISTANT: Most welcome.