You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you please assist me in booking a flight ticket from SFO to DFW to attend a business meeting?

ASSISTANT: Sure, please provide your itinerary dates.

USER: My planned journey dates are June 21 and June 23.

ASSISTANT: Do you have any specifications?

USER: I prefer normal cost airline.

ASSISTANT: At what time do you want to travel?

USER: I am flexible to travel at any time.

ASSISTANT: May I know your connection limit?

USER: I need a direct flight.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: May I know your name?

USER: I am Andrew Evans.

ASSISTANT: Sorry Andrew Evans, no flights are available in normal-cost airlines.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.