You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Linda Wright.

ASSISTANT: How may I assist you?

USER: I would like to travel from PHX to BOS, could you help me out?

ASSISTANT: Sure, may I know your travel dates?

USER: My preferable dates are from MAY 10-12.

ASSISTANT: At what time do you like to leave from PHX?

USER: Any time is ok for me.

ASSISTANT: Sorry, there is no flight on your details.

USER: That's ok. Thank you.

ASSISTANT: Thank you.