You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Rebecca Hill. I am planning to attend music concert at LAS, can you please help me with booking a flight ticket from EWR?

ASSISTANT: Sure, may I know your travel dates?

USER: Sure, I would like to depart on June 11 and return on June 13.

ASSISTANT: Do you have any specifications?

USER: Make sure that the connection limit is 1.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no flight available as per your requirements.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for opting us.

USER: You are welcome.