You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you the best today?

USER: I am planning to go for a business meeting at Boston BOS. Can you please book a ticket from Dallas DFW?

ASSISTANT: Sure, I can help you in this. Can I have your planned travelling dates?

USER: Journey dates are Aug 27 to Aug 29.

ASSISTANT: Do you prefer a connecting flight or a direct flight?

USER: I need a connecting flight.

ASSISTANT: May I know your good name please?

USER: I am Rachel Garcia.

ASSISTANT: Ok, we did not find any flights running towards your journey points on your preferred dates.

USER: No problem. Thank you.

ASSISTANT: Thanks for approaching us.