You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I render you today?

USER: I am Charles Edwards.I want to book the flight ticket from DFW to LAS.

ASSISTANT:   Do you prefer any halt in between your journey?

USER: No, I dont need any halt in journey.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My preferred travel dates are 10/13 and 10/15.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Ok, take your time.

ASSISTANT: Thanks for your precious time. We found Spirit airline fare of 200. Shall I proceed for booking with single stopover flight?

USER: No, I need direct flight in my journey.

ASSISTANT: Ok. Thank you for reaching us.

USER: Thank you for the information.