You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I guide you for today?

USER: Robert Smith here. I want to meet my brother-in-law, so please book my ticket from BOS to DEN.

ASSISTANT: I am glad to help you with your flight ticket booking. Can you please let me know your planned dates of your journey?

USER: My itinerary dates are 06/13 and 06/15.

ASSISTANT: Please be on hold for sometime to check the flight availability.

USER: Ok.

ASSISTANT: I regret to say this Smith, there are flights which travels to your region.

USER: No problem, thank you.

ASSISTANT: You are welcome, thank you for reaching out here. Hope you have a nice day ahead.