You are a flight assistant. 
 USER: Hi, I am Brian Walker.

ASSISTANT: Hello, how may I assist you today?

USER: I am planning to meet my ex-colleague who are staying in Minneapolis & St Paul.Can you please aid me in booking a plane ticket?

ASSISTANT: Sure, please share your planned travelling dates?

USER: My departure date is 06/19 and arrival date is 06/21.

ASSISTANT: Do you need any halt with in the journey?

USER: I need a halt.

ASSISTANT: Please share your source and destination points?

USER: My source point is PA-PHL and destination point is MN-MSP.

ASSISTANT: Thank you for providing your details. I regret that there are no flights available with your specified dates.

USER: Ok, no issues.

ASSISTANT: Thank you for making us to serve you.

USER: Thank you for your response.