You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Robert Perez.

ASSISTANT: How can I assist you?

USER: I planned to attend for a wedding in SFO, can you please help me to book a flight ticket from AUS?

ASSISTANT: Ok, can you please mention your travelling dates?

USER: I prefer to travel on Feb 15 and Feb 17.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry, no flights found on your route to reserve your ticket.

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

ASSISTANT: Thank you for reaching us.