You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am Rachel Hill, please help me in search a flight ticket for my wife.

ASSISTANT: Sure, I am glad to help you. Could you please share the dates of travel?

USER: My travelling dates are 10/18 and 10/20.

ASSISTANT: Ok, please mention the codes of airport to proceed further.

USER: My source is DCA and my destination is SFO.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Ok, there is a flight 1000 in AA airline matching your provided details with price 100. Shall I proceed with this airline?

USER: Yes, proceed with booking.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: You are welcome, have a nice day.