You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What can I do for you today?

USER: I am Sharon Phillips. I want to book a connecting flight ticket .Can you help me?

ASSISTANT: Sure, please provide your boarding and landing airport codes?

USER: SFO and DCA are my nearest airport codes.

ASSISTANT: Ok, may I know your travelling dates please?

USER: 11/23 and 11/25 are my travelling dates.

ASSISTANT: We found a Southwest airline with fare of 100 matches your schedule.

USER: Ok. You can reserve it.

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

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.