You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I need to book a flight ticket from IAH to SFO, Can you please help me for booking?

ASSISTANT: Sure, can you please share your journey dates?

USER: I would like to travel on 04/21 to return on 04/23.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Please let me know your other preferences.

USER: No.

ASSISTANT: May I know your name please?

USER: Barbara Carter here.

ASSISTANT: We found a connecting flight with American airlines, flight number 1009, and the fare of 100 in economy class.

USER: Ok, proceed for booking.

ASSISTANT: Your ticket has been reserved.

USER: Thanks for your information.

ASSISTANT: Thank you for choosing us.