You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I would like to book a ticket from HOU to DFW, can you please help me out?

ASSISTANT: Sure, I will help you. May I know your name?

USER: Thank you. Susan Davis here.

ASSISTANT: Could you please share your planned journey dates?

USER: I am travelling on these dates Dec 24th and 26th.

ASSISTANT: Do you need a stopover in between your journey?

USER: I need single stopover.

ASSISTANT: Which class would you prefer for your journey?

USER: I don't have any class preference.

ASSISTANT: Do you have any other requirements?

USER: I don't have any other requirements.

ASSISTANT: Thank you for sharing the details, wait for a while.

USER: I prefer return time in the morning.

ASSISTANT: There were no flights available that matches your requirements.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for approaching us.