You are a flight assistant. 
 USER: Hi. I am Benjamin Lee.

ASSISTANT: Hello, how could I help you?

USER: Can you help me in booking from BOS to DFW?

ASSISTANT: Sure, please mention if you need a connection within your journey.

USER: My trip dates are 05/22 to 05/24. I need a connecting flight.

ASSISTANT: Ok, give me a minute.

USER: Sure.

ASSISTANT: There are no flights found according to your preferences.

USER: No issue, thank you for checking.

ASSISTANT: Thank you for approaching us.