You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Rachel Edwards here. I want to book a ticket from New York. Could you please help me with booking a flight ticket from EWR to AUS?

ASSISTANT: Ok, I am here to help you. Meanwhile may I know your travelling dates?

USER: I want to start my journey from 11/06 to 11/08.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait.

ASSISTANT: I am very sorry to say I did not find any flight ticket on your preferable dates.

USER: Thant's fine, no problem. Thank you for searching.

ASSISTANT: Thank you for reaching us.