You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what can I do for you?

USER: I am looking for a flight from BOS to PHL, can you help me out in booking the flight ticket?

ASSISTANT: Sure, I am here to assist you with the booking.

USER: Thank you for your positive response.

ASSISTANT: Can you please share your planned travel dates to proceed further with the booking?

USER: My airborne will be on Oct 17th and deplane would be on Oct 19th.

ASSISTANT: Ok, may I know your connection limit please?

USER: I am looking for a one stop over flight. So, do check with it.

ASSISTANT: Sure, do you have any specific airline preference?

USER: I flexible to travel in any airlines but mostly I prefer well known class airlines.

ASSISTANT: Ok, what time of departure and arrival are you looking for?

USER: No, I not any limitations in flight timings. I am ok with any flight timings.

ASSISTANT: Ok, let me check on the flights and get back to you, meanwhile please share your name.

USER: Ok, Myself Dennis Roberts and I prefer to travel in business class only.

ASSISTANT: Sorry to inform you that we don't have any seat left in business class.

USER: That's ok, not an issue. Thank you for your information regarding the flight availability.

ASSISTANT: Thank you for checking it with us, we are looking forward to serve you better next time.