You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: My name is Angela Thomas.

ASSISTANT: How can I help you?

USER: Please book me a ticket from OAK to LAS, as I want to visit Fremont Street with my friends.

ASSISTANT: May I  know your travelling dates?

USER: My planned travel dates are 04/29 and 05/01. Please find me a direct flight.

ASSISTANT: No, flights found on your details. Thank you for contacting us.

USER: That's ok, thank you for the information.