You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I am Lisa Lewis. I would like to travel from PHX to BOS for an important meeting, can you please search is there any flight available for me?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: Thank you for your response, I want to take off on Oct 08 and book my return ticket also on Oct 10.

ASSISTANT: Noted. Do you have any preferences?

USER: I want to take off in afternoon time.

ASSISTANT: Sorry, there is no flight available on your journey dates.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: You are welcome, have a nice day.