You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Kathleen Lewis here.

ASSISTANT: How can I help you?

USER: I want to meet my mother-in-law at Houston, could you book my ticket from SFO to IAH?

ASSISTANT: Sure, can you please tell your travelling dates?

USER: My itinerary dates 08/08 and 08/10.

ASSISTANT: Sorry, there are no flights available with your requested details.

USER: No problem, thank you for checking.

ASSISTANT: Thank you and have a nice day.