You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Nicholas Williams.

ASSISTANT: How can I assist you today?

USER: I am planning to visit Downtown Aquarium at Houston, could you please help me with booking a flight ticket from DFW to HOU?

ASSISTANT: Sure, can you please share your travel dates?

USER: I would like to take off on 07/11 and return on 07/13.

ASSISTANT: Let me check for the availability of flight.

USER: Sure, take your time.

ASSISTANT: Nicholas, there is a flight available with price 100 and the connection is 1 with Spirit airline. Would you like me to proceed with the booking?

USER: Please confirm the booking.

ASSISTANT: Your booking is confirmed with 1001 flight number.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you for contacting us.