You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I am planning to meet my project manager at Boston. Can you please help me in reserving the ticket from PHX to BOS?

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable dates of travelling?

USER: I would like to travel on Aug 20 and again I will return back on Aug 22.

ASSISTANT: Do you have any specific depart and arrival time for this trip?

USER: No, I don't have any particular timing's regarding my journey.

ASSISTANT: May I know your name to book the flight ticket?

USER: Myself Michael Allen.

ASSISTANT: Do you have any connection limit?

USER: I am comfort to travel in single connection flight.

ASSISTANT: I have found a flight with single connection between your journey having with the fare of 100 provided by United Airlines in economy class. Are you ok with this flight?

USER: Can you please check for the business class?

ASSISTANT: Sorry, business class are flights are not available for your journey.

USER: Not a big problem, anyhow thank you very much for your kind information.

ASSISTANT: Thank you for approaching us.