You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Helen Wright.

ASSISTANT: How may I guide you at this moment?

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

ASSISTANT: Sure, I am happy to help you with the ticket booking. Can you please tell me your travel dates?

USER: I am travelling on these dates Aug 27th and 29th. I need a halt.

ASSISTANT: Ok, do you have any preferences?

USER: I prefer departure time in afternoon.

ASSISTANT: Sorry to inform you that, I have not found any flight in this route on these dates.

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

ASSISTANT: You are most welcome. Thank you for consulting us.