You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you aid me to book a ticket from HOU to LAX?

ASSISTANT: Can I know your travel dates?

USER: My travel dates are Sep 24 and Sep 26 respectively.

ASSISTANT: Is there any airline preference?

USER: No other airline preferences for me.

ASSISTANT: Do you have any class preference?

USER: No other preferences for me.

ASSISTANT: Let me know your name.

USER: Carol Jones here.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: No issue.

ASSISTANT: Thank you.

USER: Thank you.