You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I am Helen Parker, want to travel from SFO to DFW for my business meeting. Can you book my ticket?

ASSISTANT: Sure, I will aid you with that. Could you please let me know your travel dates for booking flight ticket?

USER: My travelling dates are from 11/17 to 11/19.

ASSISTANT: Please hold on a moment, I will check flight availability in this route.

USER: Sure.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 300 is provided by Spirit airlines. Shall I proceed with this?

USER: Please proceed.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1005.

USER: Thank you.

ASSISTANT: Thank you for reaching us, have a nice day.