You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today from my end?

USER: I am Michelle Anderson, can you help me to book a flight from OAK to IAH?

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: My travelling dates are 11/13 and 11/15.

ASSISTANT: Sorry Michelle Anderson, there is no flight in your route with your travel dates.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for reaching us.