You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Lisa Devis here.

ASSISTANT: Good evening Lisa.

USER: I am planning to visit  Houston , so please book a ticket from IAH to JFK.

ASSISTANT: Sure, may I know your journey dates please?

USER: Sure, my travelling dates are 03/27 and 03/29.

ASSISTANT: Please give me a minute.

USER: Sure.

ASSISTANT: Lisa, I found a flight in UA airlines with price 100. Shall I book the ticket for you?

USER: Ok, confirm it.

ASSISTANT: Your ticket is confirmed and the flight number is 1003.

USER: Thank you for your great service.

ASSISTANT: Thank you for contacting us.