You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Laura Lewis.

ASSISTANT: How may I help you?

USER: I am planning to travel from LAX to OAK, help me in booking a flight?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: My travelling dates are June 19 t June 21.

ASSISTANT:  Is there any another specifications on your trip, so that I can arrange like that only.

USER: My price limit should not cross more then 200.

ASSISTANT: Sorry, there is no flight found on your preferable dates.

USER: That's ok, thank you.

ASSISTANT: Thanks for contacting us.