You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I am looking for a flight from LAX to DFW, can you help me in booking?

ASSISTANT: Sure, please send your travelling dates.

USER: Sure, my planned travel dates are Feb 03 and Feb 05.

ASSISTANT: Do you have any class or time preferences?

USER: I would like to return my journey for the afternoon flight in an economy class.

ASSISTANT: Do you have any connection preference?

USER: Yes, please look for a connecting flight.

ASSISTANT: May I know your name?

USER: Myself Deborah Clark.

ASSISTANT: Sorry, there is no flight available with your name.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: You are welcome, have a nice day.