You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Patrick Lewis. Can you please help me to book a flight ticket to IAD from SFO in the month of May?

ASSISTANT: Sure, can you provide your journey dates?

USER: My travelling dates are 05/25 and 05/27.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a single connecting flight.

ASSISTANT: There is a connecting flight with number 1022 in airline Hawaiian, the fare is 100.

USER: Ok, please book this flight which suits my requirements.

ASSISTANT: Your ticket is booked.

USER: Thank you for your services.

ASSISTANT: Thank you for reaching us.