You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am planning to visit Houston whose airport code is HOU. Please help me in booking my ticket from Orlando, and Orlando's airport is MCO.

ASSISTANT: Sure, can you please tell me your trip dates?

USER: My travelling dates are from 08/06 to 08/08.

ASSISTANT: Do you have any airline preference?

USER: I am looking for normal cost airline.

ASSISTANT: Ok, may I know your name?

USER: My name is Jessica Hill.

ASSISTANT: Ok,  Jessica please wait a minute. I will check the flight availability and get back to you.

USER: Ok, take your time.

ASSISTANT: Sorry, we regret to inform you that there is no flights available on these route.

USER: It's ok, thank you for your help.

ASSISTANT: Most welcome.