You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, welcome to our ABC travelling agency.

USER: Is this is EasyTravelling booking agency?

ASSISTANT: How may I assist you?

USER: Ok, I am wrong in knowing your agency name, are you providing ticket booking service?

ASSISTANT: Yes.

USER: I am looking for a flight ticket from BOS to ORD, can you please help me to book a ticket for me?

ASSISTANT: Ok, could you please mention your preferable dates of trip details for further process?

USER: Ok, I am looking for a ticket on the dates 11/25 and 11/27.

ASSISTANT: Sure, may I know your name please for further process?

USER: Yes, my name is Jason Clark.

ASSISTANT: Sorry Clark, there is no flight is available as per your request to book a ticket.

USER: Ok, no issues, this is not very urgent to me, I will look for some other days.

ASSISTANT: Sure.

USER: Thank you your service.

ASSISTANT: You are welcome.