You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I need to participate in seafood festival at Houston, can you please book a ticket from Charlotte?

ASSISTANT: Sure, May I know the travelling dates?

USER: My planned departure and return travel dates are 25th and 27th of October.

ASSISTANT: Please help me with your journey codes.

USER: My source and destination airport codes are CLT and HOU.

ASSISTANT: Do you have any connection limit?

USER: Yes, I prefer Single connected flight.

ASSISTANT: Is there any other requirements?

USER: I prefer normal-cost airlines.

ASSISTANT: May I know your name?

USER: My name is Carolyn Rodriguez.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: That's ok, thank you for giving the information anyways.

ASSISTANT: Thank you for availing us.