You are a flight assistant. 
 USER: Hello. I am Melissa thomas.

ASSISTANT: Hello, how can I best support you?

USER: I am planning to start my new project at Los angels CA-LAX, help me in booking my flight ticket from Minneapolis MN-MSP.

ASSISTANT: Sure, when would you planned to travel?

USER: I have planned to start on 05/21, please make my return ticket on 05/23.

ASSISTANT: How much you can pay for this ticket?

USER: I can spend up to 500 in booking my flight ticket.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Thanks for waiting. Unfortunately there are no flights found on that dates.

USER: Its ok, I will search other alternative, thank you for your assistance.

ASSISTANT: Thank you for reaching us.