You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: I want to reach LAS, can you please help in booking my flight from HOU?

ASSISTANT: Sure, please share me your trip dates.

USER: Sure, my trip dates are Aug 24th and 26th.

ASSISTANT: Is there any class preferences for you?

USER: No.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a single connecting flight.

ASSISTANT: May I know your airline preferences?

USER: I prefer normal cost airlines.

ASSISTANT: Please share me your other specifications.

USER: I don't have any other specifications.

ASSISTANT: For booking, we need your good name. Please provide it.

USER: Myself Melissa Wright.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, no problem. Anyways, thank you for the information.

ASSISTANT: Thank you for opting us.