You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be there for you?

USER: I am Nicholas Taylor. I would like to book a ticket from BOS to HOU, can you please help me out?

ASSISTANT: Sure, when are you planning to travel?

USER: I am travelling on these dates Aug 17th and 19th.

ASSISTANT: At what time would you like to depart and return?

USER: I prefer return time in the afternoon.

ASSISTANT: How many connections do you need?

USER: I need a single connected flight.

ASSISTANT: Do you need an economy class or business class?

USER: I don't have any class preference.

ASSISTANT: Thank you for providing your details, I regret to inform you that there are no flights obtained on your journey dates to book a flight ticket.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for picking us.