You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. I am here to assist you with all your concerns related to the flight reservations.

USER: I am Catherine Smith.

ASSISTANT: How may I assist you with your services, Catherine?

USER:  I would like to attend Comic Con event which is grandly held at Bostone, please help me in booking the ticket from DEN to BOS?

ASSISTANT: Sure I will be helping you with booking Catherine Smith, hope you are having a great day today.

USER: Thank you.

ASSISTANT: I am oblige to help you. Please provide your desired dates for the following journey.

USER: Sure, I would like to plan my journey in the month of may. Please find the availability of flights on 05/15 and 05/17.

ASSISTANT: May I know your budget, so that I can check for the flights within your price limit.

USER: Sure, please check the price budget below 5000.

ASSISTANT: Do you need any halt between your source and destination airports?

USER: I would prefer single connection in my journey.

ASSISTANT: Ok, can you please excuse me for a moment till I check with available flights on your requested route on your desirable dates?

USER: Sure, I will wait for your reply, but try to find a best airline for me.

ASSISTANT: Thank you for waiting and sorry for my late response.

USER: That's not an issue.

ASSISTANT: I searched for a flight by updating all your requested details in our server, but I still could not find any flights for your journey.

USER: That's really sad to here, anyhow thank you for your information.

ASSISTANT: Thank you for choosing our assistance for your required help.

USER: you are most welcome.

ASSISTANT: Have a great day ahead.