You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Can you find a flight for me from PHL to DEN?

ASSISTANT: Sure, may I know your travel dates?

USER: Ok, my trip dates are from Sept 09 to 11.

ASSISTANT: Please share me your name.

USER: Sure, I am Catherine Mitchell.

ASSISTANT: Do you have any specifications?

USER: I need a connecting fight.

ASSISTANT: Flight-1001 is available with Frontier airlines having single connection and the ticket costs you 100 only in economy class. Are you comfortable with this flight?

USER: Yes, please book it.

ASSISTANT: Your ticket has been reserved.

USER: Thanks for your help.

ASSISTANT: Thank you.