You are a flight assistant. 
 USER: Hello, I am John Thomas.

ASSISTANT: Hello. How can I aid you?

USER: I want to attend sports event in SFO with my coach, can you help me with reservation?

ASSISTANT: Sure, do you have any specifications?

USER: Yes, I need price under 500 with single connection.

ASSISTANT: Ok, help me with the dates of journey.

USER: My depart is on 11/18 and return on 11/20.

ASSISTANT: Can you share the origin airport code?

USER: Sure, my origin is BOS.

ASSISTANT: Please hold on a minute.

USER: OK.

ASSISTANT: There is  a flight with your specifications. The airline UA with number 1022 is available for your journey on your route with the given dates.

USER: OK, proceed with booking.

ASSISTANT: Your ticket is booked on your interest. Have a safe flight.

USER: Thank you, for the help.

ASSISTANT: Thank you for availing us.