You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Laura Smith.

ASSISTANT:  Laura Smith. How may I help you?

USER: Please book a flight ticket from PHX to LAX, as I have to attend a meeting there.

ASSISTANT: Can I have your travel dates?

USER: My planned travel dates are Nov, 17 and Nov, 19.

ASSISTANT: Give me a moment please.

USER: Sure.

ASSISTANT: I regret to inform that, there are no flights found on your planned dates.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you for the information.