You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I am heading to Los Angeles, CA - LAX to enjoy the private helicopter tour over the long beach with my partner. Can you book a flight ticket from Philadelphia, PA - PHL?

ASSISTANT: Sure, I am here to help you. May I know your journey dates please?

USER: My trip will last for two days, which is from 06/20 to 06/22.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: May I know your good name please?

USER: My name is Jack Parker.

ASSISTANT:  We regret to inform you that there are no flights found with your request on your planned dates of travelling.

USER: No problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.