You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Robert Taylor here, I want to reserve my ticket from DCA to IAH, can you please help me?

ASSISTANT: Sure, I am here to help you for this. Could you please share me your  travel dates?

USER: Sure, my planned dates of journey are from Jan, 10 to Jan, 12.

ASSISTANT: Do you have any airline preference?

USER: Yes, I need a depart time at afternoon.

ASSISTANT: Is there any other requirements?

USER: Yes, I need a economy class.

ASSISTANT: Please wait for a while.

USER: Sure, I will wait.

ASSISTANT: As per your data, I found a flight with Frontier Airlines and the ticket fare is 100. Shall I proceed for this?

USER: Ok, you can book it.

ASSISTANT: Your ticket is reserved in economy class with the flight-1020.

USER: Thank you for your service in booking.

ASSISTANT: Thank you very much for contacting our agency.