You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Jason Robinson here. I'm planning to visit Phoenix, can you please book a ticket from BOS to PHX?

ASSISTANT: Sure, when do you want to travel?

USER: My planned departure and return travel dates are 18th and 20th of January.

ASSISTANT: Ok, Do you need any halt in between your journey?

USER: Yes, I need 1 halt but I'm ok with direct flight also.

ASSISTANT: Ok, Do you prefer business class or economy class?

USER: I prefer business class to travel.

ASSISTANT: Ok, please wait.

USER: Sure, I'll wait for your response.

ASSISTANT: Thank you for your time, No flights were found with your given specifications.

USER: That's ok, thank you for giving the information.

ASSISTANT: Thank you for choosing us.