You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Christopher Young. I want to book a flight ticket from LAX to HOU, can you please search a flight ticket for me?

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

USER: My journey dates are 12/11 and 12/13.

ASSISTANT: I found a flight for you in AA airlines with price 100. Can I proceed?

USER: Ok, please book the ticket.

ASSISTANT: Ok, your booking is done with flight number 1008.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.