You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jennifer Thomas.

ASSISTANT: How can I assist you?

USER: I would like to travel from AUS to JFK, can you please help me to book a flight ticket?

ASSISTANT: Sure, may I know your journey dates please?

USER: I planned to travel on 07/28 and 07/30.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Jennifer Thomas, there are no flights available in your route.

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

ASSISTANT: Thank you for reaching us.