You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I am Mark Scott from New York. Could you please help me with booking a flight ticket from EWR to SFO?

ASSISTANT: Sure, I am happy to help you in booking flight ticket. Could you please mention your travel dates for booking flight ticket?

USER: My travelling dates are from 07/02 to 0704.

ASSISTANT: Please hold on a moment, I will check flight availability in this route.

USER: Ok, I will wait for your information.

ASSISTANT: Sorry there are no flights available in this route as per your requested dates.

USER: That's fine no problem, thank you for searching.

ASSISTANT: Thank you for reaching us, have a nice day.