You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Carolyn Garcia. Can you help me in booking from PHX to OAK, as there is a musical concert?

ASSISTANT: Sure, may I know your travelling dates?

USER: My trip dates are 08/31 to 09/02.

ASSISTANT: Sorry Carolyn Garcia, there is no flight for you with your preferences.

USER: No issue, thank you.

ASSISTANT: Thanks for consulting us.