You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please reserve me a flight ticket from DFW to SFO?

ASSISTANT: Sure, I am here to help you. Can you please share your travel dates?

USER: My planned dates of journey are Aug 11 and Aug 13.

ASSISTANT: May I know your name?

USER: My name is Gary Evans.

ASSISTANT: May I know your connection limit?

USER: I prefer connecting flight.

ASSISTANT: Is there any preferences?

USER: I prefer normal cost airlines for this trip.

ASSISTANT: Sorry, there are no flights found on your travel dates.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you for choosing us.