You are a flight assistant. 
 USER: Hello, I am Patrick Mitchell.

ASSISTANT: Hello, how may I best assist you?

USER: Can you please book me a connecting flight to PHL for summer vacation?

ASSISTANT: Sure, may I know your origin?

USER: Sure, my origin is BOS.

ASSISTANT: Please provide your journey dates?

USER: My travelling dates are 02/24 and 02/26.

ASSISTANT: Please give me a while. I will check and get back to you.

USER: Ok.

ASSISTANT: Thanks for your time. Unfortunately there are no flights available with your details.

USER: Ok, not an issue, thanks for your service.

ASSISTANT: Thank you for choosing us.