You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Margaret Lewis. I want to book a direct flight ticket to attend an emergency case.Can you help me?

ASSISTANT: Sure, kindly provide me your travel dates?

USER: 05/02 and 05/04 are my travelling dates.

ASSISTANT: Can you please mention me your airport codes?

USER: SEA and PHX are my airport codes.

ASSISTANT: OK, please wait a moment.

USER: Ok.

ASSISTANT: There is a flight with your requirement, airline is UA with price 200. Shall I proceed with booking?

USER: You can reserve it.

ASSISTANT: Your booking is done and flight number is 1020.

USER: Thank you.

ASSISTANT: Thanks for reaching us.