You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I want to travel to San Francisco, CA-SFO from New York, NY-EWR, can you please book me a ticket?

ASSISTANT: Sure, may I know your name please?

USER: I am Gary Campbell.

ASSISTANT: Ok, when did you scheduled to travel & return?

USER: I want to start my journey on 09/21 and return on 09/23.

ASSISTANT: Ok, do you have any other specifications?

USER: My price limit is 1000. I want a single connection in between my journey.

ASSISTANT: Thanks for sharing your details, we found a flight in UA airline with 1004 flight number that exactly matches your details. Shall I proceed?

USER: Please proceed for booking.

ASSISTANT: Sure, your reservation has been done.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.