You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Larry Garcia here.

ASSISTANT: How may I help you?

USER: I would like to meet my family member in this vacation. Can you help me in booking a flight?

ASSISTANT: Sure, can you mention your travel dates please?

USER: My preferable dates are 07/21 and 07/23. Please search a flight.

ASSISTANT: Ok, please help me with your airport codes.

USER: Sure. My location codes are SFO and DCA.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Thank you for your patience, I found a flight for you with number 1014 in AA airline.

USER: Please proceed.

ASSISTANT: Ok, your booking is confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.