You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Charles Evans here.

ASSISTANT: How may I guide you?

USER: I want to book a ticket from IAD to SFO, to meet my parents who are living in San Francisco.

ASSISTANT: Sure, can I have your travelling dates please?

USER: Ok, my trip dates are from 09/17 and 09/19.

ASSISTANT: Please wait a moment.

USER: Sure, get back with good airline service.

ASSISTANT: Thank you for your patience, there is a flight for you in AA airlines with price 100. Can I proceed?

USER: Please proceed, if the connection is 1.

ASSISTANT: Ok, your booking is confirmed with flight number 1010.

USER: Thanks for your assistance.

ASSISTANT: Thank you for reaching us. Have a great day.