You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. Please inform me, How may I best help you the day?

USER: I am Benjamin Hall, can you help me to book a flight from BOS to PHL?

ASSISTANT: Sure, may I know your journey dates?

USER: My travelling dates are 12/24 and 12/26.

ASSISTANT: Do you need any other requirements?

USER: I need a connecting flight. My price is 200.

ASSISTANT: Sorry to say that there is no flight found based on your price limit.

USER: Ok, no issues. Thank you for your help.

ASSISTANT: Thanks for reaching us, have a great day.