You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Linda Turner. I planned to attend for a wedding in BOS, can you please help me to book a flight ticket from OAK?

ASSISTANT: Sure Turner, can you please share me with your dates of travel?

USER: I prefer to travel on 06/27 and 06/29.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Turner, there are no availability of a flight tickets as per your travelling details.

USER: Ok, no problem. Thank you for your time.

ASSISTANT: You are welcome always.