You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I sustain you?

USER: I am Sarah Adams.

ASSISTANT: Ok.

USER: I am planning to attend a sister's reception at TX-DFW, Can you help me for booking a flight ticket please?

ASSISTANT: Sure, I am mirthful to help you. May I know your travelling dates?

USER: I would like to travel on 06/26 to arrival on 06/28.

ASSISTANT: May I know your price limit?

USER: I need price limit with in 500.

ASSISTANT: May I know your source point?

USER: My source point is NY-LGA.

ASSISTANT: Please wait for a while.

USER: I need single connection flight. Sure.

ASSISTANT: Sorry to tell that there are no flights on your requested dates.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thanks for your information.