You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am David Jackson. I need your assistance in searching a flight from San Francisco to Seattle. Can you please help me?

ASSISTANT: Sure, may I know your airport codes please?

USER: Thank you. My preferred airport codes are SFO and SEA.

ASSISTANT: Your travelling dates please?

USER: The planned travel dates are June 10 and June 12.

ASSISTANT: There is a flighty with single connection, can I  proceed for booking in 1003 flight?

USER: If the ticket fare is 200 or less. Then only proceed with the ticket booking.

ASSISTANT: Your booking is done in Jet Blue airlines.

USER: Thank you for your help.

ASSISTANT: Thank you.