You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: Could you book my ticket in a direct flight?

ASSISTANT: Sure, can you please help me with your travelling airport codes?

USER: I will board at SFO and land at BOS.

ASSISTANT: Ok, Please mention your travelling dates?

USER: I will travel on Nov 1 and Nov 3.

ASSISTANT: Is there any connection limit?

USER: I already mentioned.

ASSISTANT: Sorry, Is there any class preference?

USER: I have no other requirements.

ASSISTANT: Do you have any depart and arrival timings?

USER: I am comfortable to travel at any time.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: We found a direct flight of United airlines in the economy class with fare 200, can I proceed for booking?

USER: Book my ticket.

ASSISTANT: Your ticket is confirmed with flight number 1000.

USER: Thank you for your service.

ASSISTANT: Please mention your name to confirm the ticket.

USER: Janet Parker here.

ASSISTANT: Thank you for choosing us.

USER: Welcome.