You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: I want to book a normal cost airline to meet my sister, can you help me with booking?

ASSISTANT: Sure, could I have your name please?

USER: I am Robert Wright.

ASSISTANT: Ok, could you please share your departure and arrival day?

USER: I will fly on Nov 06 and recur on Nov 08.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I am comfortable with any connection.

ASSISTANT: Ok, do you have any other specifications?

USER: I want to travel in business class flight.

ASSISTANT: Ok, may I know your location airport codes?

USER: My airport codes are DEN to IAH.

ASSISTANT: Ok, please allow me a moment.

USER: Sure.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: Ok, no issues. Thank you.

ASSISTANT: You are welcome, have a great day.