You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I render you at this moment?

USER: Could you please book a flight ticket in economy class to San Francisco?

ASSISTANT: Sure, provide your travelling dates.

USER: I want to start on Jan 14 and return on Jan 16.

ASSISTANT: Ok, can You please share your airport codes?

USER: My journey airport codes are IAD and SFO.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: Ok, do you have any other requirements?

USER: I am looking for a flight with 0 connection.

ASSISTANT: May I know your good name please?

USER: My name is Timothy Rodriguez.

ASSISTANT: Ok, please wait for few minutes.

USER: Sure.

ASSISTANT: We found a Frontier airline with fare of 200 and a direct flight and a economy class matches your schedule.

USER: Ok, proceed with the booking.

ASSISTANT: Your ticket has been confirmed with flight number 1021.

USER: Thank you.

ASSISTANT: Thank you for reaching us.