You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be of service?

USER: I am traveling to Dallas for the annual leather boot convention, and need a round trip flight out of LAX.

ASSISTANT: Okay, I can help. May I please have your full name?

USER: First name, Samantha. Last name, Miller.

ASSISTANT: Thank you, Samantha. When would you like to fly?

USER: I would like to depart on May 12th and return on the 14th.

ASSISTANT: I was unable to locate a flight from LAX to DFW on those dates. I apologize for any inconvenience this may have caused and hope to hear from you again the next time you choose to fly.

USER: Thank you for checking. Have a nice day.