You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I'm Betty Collins, Can you please help to book my ticket from HOU to OAK?

ASSISTANT: Could you please provide your travelling dates?

USER: My flying dates are 01/23 and 01/25.

ASSISTANT: Sorry, there is no flight available at your request.

USER: Ok, no issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.

ASSISTANT: Have a safe journey.