You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: I am planning a trip to Oakland city this weekend, can you please book me a ticket with a fare under 200?

ASSISTANT: Sure, may I know your trip dates?

USER: My planned dates of journey are from 04/03 to 04/05.

ASSISTANT: Ok, please tell me your airport codes.

USER: My nearest source airport code is IAH and nearest destination airport code is OAK.

ASSISTANT: Ok, may I know your name please?

USER: My name is Jessica Lopez.

ASSISTANT: The Delta airline with flight number 1018 is available having price as 100 and connection as 1. Shall I proceed booking?

USER: Perfect! Please reserve my ticket with this flight.

ASSISTANT: Ok, your reservation is done.

USER: Thank you for your help in booking my ticket.

ASSISTANT: You are welcome.