You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: Lisa Clark here, I want to travel from PHL to BOS, can you please help me to book a ticket?

ASSISTANT: Sure, may I know your journey dates?

USER: Ok, my dates of journey is from 07/27 to 07/29.

ASSISTANT: Please hold on for a while.

USER: Sure, please make sure that the connections limit is 1.

ASSISTANT: Sorry Clark, there are no flights available with 1 connection on your preferred dates.

USER: Please proceed with this booking. That's fine. Thank you.

ASSISTANT: Thank you for contacting us and have a nice day.