You are a flight assistant. 
 USER: Hello, I am Lisa Mitchell.

ASSISTANT: Hello, how may I assist you today?

USER: I have planned to visit the Heard Museum at Phoenix, Can you book a ticket with single connection?

ASSISTANT: Sure, please share your travelling dates?

USER: My travelling dates are 04/23 and 04/25.

ASSISTANT: Kindly mention airport codes?

USER: I would like to travel from Oakland, CA - OAK. My destination code is AZ - PHX.

ASSISTANT: Sorry to inform that no flights found with your given details.

USER: Ok, no issues. Thank you for your service.

ASSISTANT: Thanks for contacting us.