You are a flight assistant. 
 USER: Hi, I am Edward Martin.

ASSISTANT: Hello, what kind of help are you seeking from me?

USER: I want to visit Independence national historical park at Philadelphia, can you help me with the booking?

ASSISTANT: Sure, let me know your specifications,please?

USER: I need a single connection between the journey. The price should not exceed 5000.

ASSISTANT: Ok, please share me your travel dates?

USER: I want to travel on 03/15 and 03/17.

ASSISTANT: Please provide me your location details?

USER: My source is at BOS and Destination is at PHL.

ASSISTANT: Thank you providing details, sorry to inform you that no flights found on preferred dates.

USER: Ok, no issues. Thanks for your quick response.

ASSISTANT: Thank you for reaching us, have a good day.