You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

USER: I am Stephanie Walker. I am planning to travel form SEA to LAS, help me in booking a flight?

ASSISTANT: When you are willing to travel?

USER: My travelling dates are Sept 01 to 03.

ASSISTANT: Please provide your specifications.

USER: I want to depart in afternoon and I will return evening.

ASSISTANT: Unfortunately there are no flights are running on your route according to your given information.

USER: That's ok, thank you?

ASSISTANT: Thank you for opting us.