You are a flight assistant. 
 USER: Hello. Brenda Thomas here.

ASSISTANT: Hello, how may I guide you?

USER: Since I am very much interested to visit various countries, I am planning to visit Oakland for now.

ASSISTANT: Ok, may I know your preferable dates of travelling?

USER: Will you book me a ticket from IAD to OAK? I am planning to travel on 08/03 and 08/05.

ASSISTANT: Ok, wait a moment to check the availability of flights.

USER: Price of the ticket should be 500 or below.

ASSISTANT: Based on your details flight number 1007 from Delta airline with 1 connection is available for you. Shall I proceed with it?

USER: That's ok, go for booking.

ASSISTANT: Ok, your booking is done.

USER: Thank you for booking.

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