You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I am Timothy Edwards. Can you please help me in booking my flight ticket from LGA to SFO?

ASSISTANT: Can you please share your preferable journey dates?

USER: My travelling dates are 10/12 and 10/14.

ASSISTANT: Please wait for a minute.

USER: Ok, sure.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: Fine thank you for checking.

ASSISTANT: Thank you for reaching us.