You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: This is Mary Harris, from New York. Can you aid me in booking flight ticket to New York, within fare 5000?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: May I know your travelling dates?

USER: I want to start on 04/22, and return on 04/24.

ASSISTANT: Can you share me your airport codes?

USER: It is a round-trip to NY - LGA.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Thanks for waiting. There is a flight 1009 in UA airline and price 100 with a connection. Shall I proceed?

USER: Perfect, You may now proceed.

ASSISTANT: Your ticket has been booked.

USER: Thanks for aiding me.

ASSISTANT: Thank you.