You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Samantha Nelson,I planned a lunch with my mother at Sorellina Restaurant in Boston.

ASSISTANT: May I know your journey details?

USER: I would like to travel from LAS to BOS.

ASSISTANT: Can you share your journey dates?

USER: On 09/09 to 09/11.

ASSISTANT: No, flights found with your details.

USER: Ok, thanks for your service.

ASSISTANT: Thank you, have a nice day.