You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I have to attend a client meeting in Dallas & Fort Worth, can you please find a flight ticket from Houston?

ASSISTANT: Sure, I am happy to help you. Can you please let me know your travel dates?

USER: Thank you for accepting my request. My travelling dates should be Aug 8 and Aug 10.

ASSISTANT: Ok, may I know your source and destination airport codes?

USER: The source and destination airport codes are IAH and DFW.

ASSISTANT: Ok, do you have any specifications?

USER: No, I didn't have any specifications.

ASSISTANT: Ok, may I know your name?

USER: My name is Emily Johnson.

ASSISTANT: Direct flight is available with Spirit airlines and the ticket fare is 200 only in economy class. Is that ok for you?

USER: That's fine, please proceed with the ticket booking.

ASSISTANT: Your ticket is booked successfully and your flight number is 1002.

USER: Thanks a lot for your help.

ASSISTANT: You are welcome.