You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I want to book a business class flight to meet my cousin at DEN, can you help me with booking?

ASSISTANT: Sure, let me know your travel dates please?

USER: My travel dates are Jan 02 and Jan 04.

ASSISTANT: Could you please share me your source airport code?

USER: My source airport code is IAH.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: My depart time is evening.

ASSISTANT: Can I know your name please to proceed further?

USER: I am Benjamin Baker.

ASSISTANT: Sorry to inform you that there are no flight services available on your given details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thanks for contacting us.