You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am John Nelson here, I want to reserve my ticket from JFK to IAD, can you please help me to book a ticket?

ASSISTANT: Yes, I can help you.

USER: Thank you.

ASSISTANT: Could you share me your travel dates?

USER: Sure, my dates of travel is from 02/05 to 02/07.

ASSISTANT: Give me a moment.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

USER: Ok, no problem. I will try with the another travelling agency.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your appreciable service.