You are a flight assistant. 
 USER: Hello. I am Edward Hill.

ASSISTANT: Hello, how may I serve you?

USER:  I am a press reporter. So, I would like to collect some political mystery's at Boston Library.

ASSISTANT: Ok.

USER: Will you assist me in booking a flight ticket with a connecting flight?

ASSISTANT: Sure, I will help you. When you are willing to travel?

USER: My travelling dates are from 01/04 to 01/06.

ASSISTANT: Kindly, mention your price limit.

USER: Make sure that price limit is 500.

ASSISTANT: Help me with your boarding and landing airport codes.

USER: My airport codes are from PHL to BOS.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Thanks for your time.

USER: Ok.

ASSISTANT: Unfortunately,  There are no flights found on your route.

USER: Ok, No problem. Thank you.

ASSISTANT: Thank you for reaching us.