You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I render you today?

USER: I am Mark Lopez here.

ASSISTANT: Ok.

USER: I would like to travel from Boston, BOS to LAX. Will you help me out?

ASSISTANT: Sure, we are perky to help you.

USER: Thank you for considering my request.

ASSISTANT: Do you prefer any halt in between your journey?

USER: Yes, I need one halt in between my journey.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I would like to start my journey on May 20 and return back on May 22.

ASSISTANT:  Ok, please wait a moment, let me search a flight for you.

USER: Sure, I will wait for your information.

ASSISTANT: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: That's ok, not a problem.

ASSISTANT: Thank you for choosing us.

USER: Anyway, thank you for the information.