You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Linda Rodriguez.

ASSISTANT: How may I aid you Linda?

USER: I have to go Oakland for attending a birthday party there, can you please book a flight ticket from Washington?

ASSISTANT: Sure, I will help you.

USER: Thanks.

ASSISTANT: Could you please provide your preferable airport codes for booking?

USER: I want to fly from DCA airport and destination airport is OAK.

ASSISTANT: Ok, may I know your travelling dates?

USER: My departure date is 05/05 and please book my return ticket also on 05/07.

ASSISTANT: Please wait a moment to check the flights.

USER: Sure.

ASSISTANT: According to your information, I have found a with 1 connection with the fare of 100. Is it ok for you?

USER: I am ok with this flight, please proceed.

ASSISTANT: Ok, your reservation has been done with flight number 1007.

USER: Thank you for your help.

ASSISTANT: Thank you for approaching us, have a safe journey.

USER: Welcome.