You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Larry Thompson here, I want to reserve my ticket from JFK to DCA. Can you please book it?

ASSISTANT: Please provide your trip dates.

USER: Sure, my dates of journey is from 07/07 to 07/09.

ASSISTANT: Please hold on for a while.

USER: Ok, I will wait.

ASSISTANT: Sorry Larry, no flight is available on your route.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.