You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Virginia Harris. I want to fly from Boston MA-BOS, can you help me in booking my flight ticket to Philadelphia PA-PHL.

ASSISTANT: Sure, please share me your travelling dates?

USER: 05/19 to 05/21 are my travelling dates.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there were no flights with your specifications.

USER: Its ok, thank you.

ASSISTANT: Thank you for reaching us.