You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Myself Paul Hernandez.

ASSISTANT: Nice to meet you Paul.

USER: I am planning to visit Fremont Street Experience in LAS. Can you book a ticket from my city ORD?

ASSISTANT: Sure, may I know your travelling dates please?

USER: My travel dates are from 10/06 to 10/08.

ASSISTANT: Sorry to say this Paul, we don't have a flight on your requested dates.

USER: It's ok. Thank you for your immediate response.

ASSISTANT: Thank you for reaching us. Have a good day.

USER: Thank you.