You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am looking for a flight from IAD to SFO, can you help me in booking?

ASSISTANT: Sure, can you please let me know your trip dates?

USER: Sure, my planned travel dates are May 29 and May 31.

ASSISTANT: May I know your name?

USER: Myself Sandra Campbell.

ASSISTANT: Southwest Airlines is providing a connecting flight with 1004 flight number and airfare is 100. Shall I proceed?

USER: That's fine, please proceed with booking.

ASSISTANT: For a economy class your ticket is booked.

USER: Thank you for the service.

ASSISTANT: Thank you for reaching us.