You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: Could you please book a flight ticket with an economy class from CLT?

ASSISTANT: Sure, may I know your name please?

USER: My name is Betty Anderson.

ASSISTANT: Ok, may I know your destination airport code please?

USER: My destination airport code is HOU.

ASSISTANT: Ok, may I know on which dates you are willing to travel?

USER: My trip dates are Dec 04 and Dec 06.

ASSISTANT: Is there any specific airline preference for you?

USER: I prefer a normal cost airline.

ASSISTANT: Do you have any other specifications please?

USER: I want to return in the evening. And I need a single connecting flight.

ASSISTANT: Sorry Anderson, there is no flight available as per your travelling details.

USER: Not a problem, thank you for the information.

ASSISTANT: You are welcome.