You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Linda Turner.

ASSISTANT: How may I assist you?

USER: I am planning to attend music concert at DFW, can you please help me with booking a flight ticket from JFK?

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

USER: Sure, I would like to take off on 06/27 and return back on 06/29.

ASSISTANT: Thanks for your time and patience.

USER: You are welcome.

ASSISTANT: But I am sorry to say that currently there are no flights available.

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

ASSISTANT: Thank you.

USER: You are welcome.