You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am heading to IAH from BOS to attend a party meeting. Can you help me in booking a ticket?

ASSISTANT: Sure, we are here to help you. Can you share me your travelling?

USER: I would start on Aug 2nd and return on Aug 4th.

ASSISTANT: Do you have any other specifications?

USER: I need a business class ticket.

ASSISTANT: May I know your name?

USER: I am James Taylor.

ASSISTANT: Ok, wait for some time I will check and get back to you.

USER: Sure.

ASSISTANT: Sorry, there are no flights found on your details.

USER: That's alright, thanks for your assistance.

ASSISTANT: Thanks for approaching us.