You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Carolyn Harris here. I want to meet my mother-in-law, so please book my ticket from OAK to EWR.

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My itinerary dates are 11/17 and 11/19.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: No problem, thank you.

ASSISTANT: You are welcome, have a great day.