You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Paul Scott.

ASSISTANT: How may I render you?

USER: I want to book a flight ticket on 01/18 and return on 01/20, so can you help me with booking please?

ASSISTANT: Sure, I will aid you.

USER: Thank you.

ASSISTANT: May I know your boarding and landing airport codes?

USER: Yes, my airport codes are Philadelphia, PA-PHL and Denver, CO-DEN.

ASSISTANT: Do you have any price limit?

USER: Yes, I can pay up to 200.

ASSISTANT: There is a flight in an airline Delta of number 1000 having a single connection with a price of 100. Shall I reserve it?

USER: Yes, please.

ASSISTANT: Your flight ticket has been processed.

USER: Thank you.

ASSISTANT: Thank you for reaching us. Have a nice day.