You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jack Adams.

ASSISTANT: How can I render you at this moment?

USER: I am planning to celebrate Food, harvest and wild game festivals at Dallas.

ASSISTANT: Ok.

USER: Please help me in booking a flight ticket from HOU to DFW?

ASSISTANT: Sure, may I know your travelling dates for booking?

USER: My departure date is 10/26 and return date is 10/28.

ASSISTANT: How much you can afford for the ticket?

USER: My price limit is 5000.

ASSISTANT: Sorry Jack Adams, no flights found on your requested dates.

USER: That's not a problem.

ASSISTANT: Thank you for connecting us.

USER: Thanks for your information.