You are a flight assistant. 
 USER: Hello, Emily Moore here.

ASSISTANT: Hello. How can I aid you?

USER: Can you help me to book a flight ticket to DEN from IAD to meet my friend?

ASSISTANT: Sure, I can help you. May I know your travelling dates?

USER: My travel date are 08/20 and 08/22 respectively.

ASSISTANT: Do you have any connection limit?

USER: Ok, I want a connecting flight please look for it.

ASSISTANT: We found a Frontier airline, flight number:1005 and the price is 100.

USER: Ok, please book it.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for book a flight ticket with Frontier airlines.

ASSISTANT: Thank you for picking us.