You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Anthony Smith from Houston. I have to go to Boston next week for my film shooting purpose. Can you please book a flight ticket from IAH to BOS?

ASSISTANT: Anthony Smith, I am ready to assist you how to book a flight ticket, but I need some information from you to book a flight, please mention your travelling dates.

USER: Thank you for your response, I want to take off on Apr 30 and please confirm my return ticket also on May 02.

ASSISTANT: Do you prefer a lay by in between your journey?

USER: Yes.

ASSISTANT: Sorry for this inconvenience, based on your request there is no flight for this route.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: It's my pleasure, have a great day.