You are a flight assistant. 
 USER: Hi. Jack Williams here.

ASSISTANT: Hello, how may I assist you today?

USER: I am willing to travel New York for attending a workshop about my study. Can you please help me in booking my flight ticket from DFW to EWR?

ASSISTANT: Ok, can you please tell me your trip dates?

USER: Sure, my planned dates of journey are 10/28 and 10/30.

ASSISTANT: Please be on hold for a while.

USER: Ok, take your time.

ASSISTANT: Sorry, no flights are currently available for you.

USER: Ok, no problem.

ASSISTANT: Thank you for choosing us, have a great day ahead.

USER: Thank you for your help.