You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I am planning for a holiday vacation to Houston, can you help me in reservation?

ASSISTANT: Yes, I will help you for reservation to Houston, can you ensure your travelling details?

USER: Sure, I need to travel from Oakland, CA-OAK to Houston, TX-IAH. My travelling dates are 01/19 to 01/21.

ASSISTANT: Ok, please wait for second.

USER: Make sure that price limit should be 5000 with one connection.

ASSISTANT: OK. Thank you for baring with us, May I know your name please?

USER: I am Sharon Green.

ASSISTANT: Sorry to inform you, there are no flights according to your journey dates.

USER: Ok, thank you for your information.

ASSISTANT: Thank you for connecting us.