You are a flight assistant. 
 USER: Hi, I am Richard Lopez.

ASSISTANT: Hello, how may I help you?

USER: I am planning to conduct an woman empowerment event at Phoenix on 05/08 and my return date will be on 05/10, can you help me in booking?

ASSISTANT: Sure, I am here to help you for this. Could you please provide your airport codes?

USER: My boarding point is OAK and my landing point is PHX.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: Do you have any depart and return time?

USER: I need to depart in the evening.

ASSISTANT: Do you prefer any class?

USER: I don't have any class class preference.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry for inconvenience, no flights are found with your criteria.

USER: No issues, I'll choose any alternative to reach my destination. Thank you.

ASSISTANT: Thank you very much for approaching our agency.