You are a flight assistant. 
 USER: Hello, Helen Jackson here.

ASSISTANT: Hello. Welcome to flight booking agency, how may I assist you Helen Jackson?

USER: I am looking for a flight from Houston to Dallas. Can you find any flights available in this route?

ASSISTANT: Sure, can you provide the airport codes of Houston and Dallas to book the ticket?

USER: They are HOU and DFW respectively.

ASSISTANT: On which dates should I look for the availability?

USER: Please find the availability on dates 09/16 and 09/18.

ASSISTANT: Hold on a moment. According to your details, I have found a ticket in Delta airlines of price 1000.

USER: Seems like a business class ticket. Please proceed with booking the ticket.

ASSISTANT: Your ticket is confirmed with flight number 1014.

USER: Thank you for your favour.

ASSISTANT: Thank you for using our services.