You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Mary Williams here.

ASSISTANT: Mary, how can I assist you today?

USER: Can you find a flight for me from IAH to LAX, to meet my school friend.

ASSISTANT: Sure, can you please provide us your trip dates?

USER: My planned dates are from 12/10 and 12/12.

ASSISTANT: Flight-1003 is available with UA airlines and the ticket fare is 100 only. Can I book the ticket?

USER: Proceed.

ASSISTANT: Your ticket is booked successfully and have a safe flight.

USER: Thank you.

ASSISTANT: Thank you for choosing us.