You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Gary Harris here.

ASSISTANT: How can I aid you at this moment?

USER: I want to travel from DEN to SFO for attending a seminar. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I will help you  in booking flight ticket. May I know your travel dates for booking flight ticket?

USER: My travelling dates are from 10/20 to 10/22.

ASSISTANT: Thank you for providing your travel details. I will put the conversation on hold to check the best flights available in your route.

USER: Ok, I will wait.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 100 is provided by Spirit airlines. Shall I proceed with this?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1000.

USER: Thanks for helping me.

ASSISTANT: Thank you for contacting us.