You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I am Dorothy Thompson. I would like to book a connecting flight, could you please help me?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: Sure, my travelling dates are 11/19 and 11/21.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: My travelling airport codes are PHX and HOU.

ASSISTANT: Do you have any airline preferences?

USER: No, I do not have any airline preference.

ASSISTANT: Do you have any class preferences?

USER: No, I do not have any class preference but I want to return in the morning.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: No, I do not have any other requirements.

ASSISTANT: Sorry, there are no flights available at your request.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for contacting us, have a nice day.