You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What type of help you are expecting from our travel agency?

USER: I would like to book a ticket from HOU to ATL, can you please help me out?

ASSISTANT: Sure, I am happy to help you with the ticket booking. Could you please mention your travel dates?

USER: I am travelling on these dates July 14th and 16th.

ASSISTANT: Ok, do you have any class preference?

USER: I prefer economy class.

ASSISTANT: Ok, do you have any other specifications?

USER: I need a single connected flight.

ASSISTANT: Ok, please tell me  your good name to record your details.

USER: Kenneth Parker here.

ASSISTANT: Sorry Kenneth Parker, there is no flight found in this route with the dates you have given.

USER: Ok no problem, thank you for your services.

ASSISTANT: Most welcome. Thank you for contacting us.