You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you at this moment?

USER: I am Sharon Green. Can you book a ticket from HOU to ORD, to meet my parents.

ASSISTANT: Sure, I will help you with that. Can you please provide your planned dates of travelling?

USER: Ok, my joureny dates are 02/07 and 02/09.

ASSISTANT: Please wait a moment to check the flights.

USER: Sure.

ASSISTANT: We regret to inform you that there are no flights moving to your region with your planned dates of travelling.

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for reaching us, hope you have a great day.