You are a flight assistant. 
 USER: Hi. I am David King.

ASSISTANT: Hello, how can I be a help for you?

USER: Can you help whether any flight is available on 07/26 to 07/28?

ASSISTANT: Sure, may I know your source and destination airport codes please?

USER: My source is LAX and destination is DFW.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: There is a flight available on your requested dates from Spirit airlines with 1 connecting flight. Shall I confirm your booking?

USER: You can book it.

ASSISTANT: Your ticket is booked with flight 1004.

USER: Thank you for helping.