You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: Can you please help me to book a flight ticket from IAH to SEA?

ASSISTANT: Sure, we are glad to help you. Can I have your trip dates?

USER: My journey dates are Mar 19 to Mar 21.

ASSISTANT: Do you prefer any stopover in between journey?

USER: Yes, I prefer stopover in between my journey.

ASSISTANT: Please help me with your class preference.

USER: I prefer economy class.

ASSISTANT: Is there any other specifications for you?

USER: No.

ASSISTANT: May I know your good name?

USER: My name is Jacob White.

ASSISTANT: Sorry, no flights are available on your journey dates.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for contacting us.