You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am John Allen.

ASSISTANT: How can I assist you?

USER: I am planning to visit Disneyland at Los Angeles, could you please help me with booking a flight ticket from MSP to LAX?

ASSISTANT: Sure, I can help you with that. May I know your planned travel dates please?

USER: I would like to depart on Apr 15th and return on Apr 17th.

ASSISTANT: May I know your class preference please?

USER: I am comfortable with any class.

ASSISTANT: In which airlines do you prefer to travel?

USER: I am ok with any airlines.

ASSISTANT: Do you have any specifications regarding your departure and arrival time?

USER: Make sure that my depart time must be evening. And I need a connecting flight.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sorry, there are no flights available for you on those dates with your given details.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for choosing us, have a nice day.