You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Cynthia Taylor here.

ASSISTANT: How can aid you?

USER: I would like to travel on the route from IAD to SFO, can you please help me?

ASSISTANT: Sure, help me with your trip dates.

USER: My travelling dates will be starting on 02/27 and I would like to return back on 02/29.

ASSISTANT: There is a connecting flight with number 1019 in airline UA.

USER: Ok, please book my reservation with this flight.

ASSISTANT: Your ticket is reserved.

USER: Thank you booking my ticket.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.