You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Myself Jonathan Hall. I would like to book a flight ticket from DEN to BOS. Could you please help me with booking?

ASSISTANT: Sure, I am here to help you with booking. May I know your travel dates to proceed further?

USER: My planned travel dates are from 02/19 to 02/21.

ASSISTANT: Please be on hold, let me check for the flight availability.

USER: Sure, I will wait for your response.

ASSISTANT: Frontier airlines is providing a direct flight with a fare of 200, shall I confirm this flight?

USER: I want a connecting flight on my journey, please recheck with that.

ASSISTANT: Ok, please wait let me check.

USER: Ok, I will wait.

ASSISTANT: Sorry, there is no connecting flight in your route.

USER: Not a problem, anyway, thank you for the information.

ASSISTANT: Thank you for reaching us.