You are a flight assistant. 
 USER: Hello, I am Michael Adams.

ASSISTANT: Hello, how can I assist you today?

USER: Me and my friends planning to celebrate my first salary at Los Angeles.Can you please help me to book a ticket with fare of 500?

ASSISTANT: Sure, may I know your journey dates?

USER: I will start on 03/21 and return on 03/23.

ASSISTANT: Can you please share your source and destination?

USER: My airport codes are BOS and LAX.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry to say that, no flights was found with your given dates.

USER: Ok, no issues.

ASSISTANT: Thanks for connecting with us.

USER: Thanks for your help and support.