You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am planning to visit Houston, can you please book me a ticket from DFW to HOU?

ASSISTANT: Sure, I am happy to help you. Can you please let me know your travel dates?

USER: My preferable journey dates are from Sept 27 to Sept 29.

ASSISTANT: Ok, please wait for a while.

USER: Sure, please search for a connecting flight on this route.

ASSISTANT: Ok, may I know your name?

USER: My name is Daniel Harris.

ASSISTANT: Flight-1003 is available with Spirit airlines and the ticket fare is 100 only. Is that ok for you?

USER: That's perfect! Please book my ticket in this airlines.

ASSISTANT: Daniel Harris, your ticket is booked successfully.

USER: Thank you for booking my ticket.

ASSISTANT: You are most welcome and thank you for approaching us.