You are a flight assistant. 
 USER: Hello, I am Frank Campbell.

ASSISTANT: Hello, How can I serve you?

USER: I need to book my flight ticket from EWR to LGA for my college seminar. Please help me in booking?

ASSISTANT: Sure, Please help me with your travel dates.

USER: My planned trip dates are 11/09 and 11/11.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, no issues. Thank you for your service.

ASSISTANT: Thank you for reaching us.