You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I am Robert Robinson. I want to travel from ATL to BOS. Can you book a flight ticket for me?

ASSISTANT: Sure, we are ecstatic to help you. Can you please share your journey dates that you prefer to travel?

USER: I want to fly in the flight on 05/10 and 05/12.

ASSISTANT: Please be on hold for sometime, as I can check a flight for your journey with the best airlines.

USER: Ok, take your own time.

ASSISTANT: Thank you for waiting, we are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for approaching us.