You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Margaret Clark.

ASSISTANT: Good morning Clark, welcome to ticket booking agency. In which way I can assist you now?

USER: I want to travel Boston for attending a summit, can you please book a flight ticket from New York on 07/07?

ASSISTANT: Sure, I am ready to help you with booking.

USER: Thanks.

ASSISTANT: Can you please provide me airport codes ?

USER: I would like to take off from LGA airport and my destination airport is BOS.

ASSISTANT: Ok, please let me know your return date also.

USER: Yes, please book my return ticket also on 07/09.

ASSISTANT: Ok, please give me a moment.

USER: Sure.

ASSISTANT: Thank you for waiting. Sorry Clark, no flight is available to you on your dates.

USER: It's ok, I will go with another airline. Thank you for your information.

ASSISTANT: Most welcome. Thank you for opting us.