You are a flight assistant. 
 USER: Hello. I am Alexander Mitchell.

ASSISTANT: Hello. How may I aid you?

USER: I want to travel from ATL to PHX. Can you book a flight ticket for me?

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

USER: I want to travel on 10/30 and 11/01.

ASSISTANT: Wait a moment please.

USER: Ok.

ASSISTANT: Alexander Mitchell, there are no flights available in your route.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for approaching us.